Answers created by Teddy
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What is the derivative of Tan^-1 (y/x)?
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What is the Cartesian form of (0,pi)?
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How do you find the extreme values of the function and where they occur?
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How do you evaluate sec^-1(sec((9pi)/10))?
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Prove that a^2-1 is divisible by 8 for all odd integers a (induction)?
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How to find the cube roots of sqrt(2) + isqrt(2) ? Exhibit them as vertices of certain regular polygon, and identify the principal root
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If A= <-8 ,3 ,-4 > and B= <-3 ,4 ,8 >, what is A*B -||A|| ||B||?
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What is the polynomial function f of least degree that has rational coefficients, a leading coefficient of 2, and the zeros -4, 0, 2, 4?
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What is the net area between f(x)=ln(x^3-x+2)/x^2 in x in[1,2] and the x-axis?
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In an Isoceles triangle ABC,bisector CD of the angle C is equal to the base BC.Then the angle between CDA is ?
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What is \lim _ { x \rightarrow 0} x \ln x?
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Describe what is meant by a negative relationship between two variables with an example ?
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How do you expand the logarithmic expression ln (x/3y)?
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What is jump discontinuity in math?
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What is the primary objective of sampling from a population?
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What is meant by the determinant of a matrix?
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How do you convert 5i to polar form?
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Can someone help me with this contingency table??
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Triangle ABC is a right triangle. The shortest side is 7 m long and the longest side is 10 m long. What is the approximate length of the third side?
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What is the remainder when (2x^3 – 8x^2 + 6x – 6) ÷ (x – 4)?
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Two days before an election, city officials projected that 67% of all registered voters would vote. Two days after the election, after reviewing the actual voting turnout, they announced that 81% of registered voters had actually voted. Which of these percentages is a parameter, and which is a statistic?
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I flip a coin 10 times and I get 8 heads.
what the propability of the 11th flip to be tails?
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How do you differentiate f(x)=sqrt((7-2x^3) using the chain rule.?
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How can you take second derivative of (x^2+12)/(x-2) ?
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A binary operation *,defined on the set of R of real numbers is given by x*y=x+y+2xy. Find the identity element?
Show workings please
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How do you find the arc length of the curve y=lnx over the interval [1,2]?
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How do you find the slope of a tangent line to the graph of the function sqrtx at (4,2)?
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Find all x-values where x is discontinuous. For each discontinuity state which of the three conditions is not fulfilled. Can anyone help me with this?
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What is the derivative of tan(sin x)?
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Consider S={0,1,2} is the set of residue classes modulo 3 under addition then inverse of 2 is???
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How to show that 1/(2a) ln |(x - a)/(x + a)| + C is equal to 1/(2a) ln |(x + a)/(x - a)| + K?
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How do you write a polynomial equation for a graph that passes through point (2, -14) and has x-intercepts at (rad5,0), (-rad5,0), and bounces off x-axis at (6,0)?
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What is the formula for the sum of an arithmetic sequence?
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A circle has a chord that goes from ( pi)/2 to (13 pi) / 6 radians on the circle. If the area of the circle is 5 pi , what is the length of the chord?
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Find the measure of angle y. Round your answer to the nearest hundredth. (please type the numerical answer only)
A right triangle is shown with one leg measuring 8 and the hypotenuse is labeled 13. An angle made with the leg measuring 8 and the...?
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How do you use the Change of Base Formula and a calculator to evaluate the logarithm log_3 15?
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How do you factor 5r ^ { 3} s + 30r ^ { 2} - 5r ^ { 2} s - 30r ^ { 3}?
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Find the coordinates of the inflection points for f(x)=xe^x?
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Products from a certain machine are too large 15% of the time. What is the probability that in a run of 20 parts, 5 are too large?
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How do you write an expression for the nth term of the geometric sequence with a1=64, r=-1/2, and n=10? Find the indicated term.
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What is the derivative of x^sin(x)?
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Find dy/dx if y=e^2x sin2x ?
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The domain of f(x)=log(x) is?
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How do you differentiate f(x)= sqrt (lnx^2-x)?
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Two opposite sides of a parallelogram each have a length of 6 . If one corner of the parallelogram has an angle of ( pi)/3 and the parallelogram's area is 24 , how long are the other two sides?
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F(x)=\sqrt(x^(2)-5x+6), find the domain and range ?
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How do you write the partial fraction decomposition of the rational expression (2x-3) / (x-1)^2?
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How do you factor completely p^4+2p^3+2p^2-2p-3?
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For what value of a is the polynomial x^3-ax^2-2x+5a-7 a multiple of (x-a)?
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What is the domain?
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How do you find all the solutions of the following equation in the interval [0, 2pi)?
48sin^2x = 48-24cosx
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How can you write -2=log9 1/81 in exponential form?
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How do you integrate x^2/((x-3)^2(x+4)) using partial fractions?
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Integrate (1)/(sqrt(1-x^2)) from -1 to 1?
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What is the equation of a circle in general form if the center is 2,6 passes through the point 3,1? Thanks
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Integrate (logx)/(x(1+logx)(2+logx)) ?
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How do you differentiate g(t)=t^3cost?
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Someone help me with this please... The length of a rectangle is given by 2t^2 + 3t – 7 and the height is sq. root of 2t, where t is time in seconds and the dimensions are in feet. Find the rate of change of the area with respect to time? Thank you!
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What is the conjugate of the complex number -5 - 5i?
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What are the mean and standard deviation of a probability density function given by Pr(X=k) = (4^ke^-4)/(k!) for k in {0,1,2... oo}?
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Why does the change of base rule for logarithms work for any value of x?
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There are 14 NBA teams who do not make the playoffs. Of these teams, 3 of them will be randomly selected to make the 1st, 2nd, and 3rd pick. How many different ways can the 1st-3rd pick be arranged?
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What is the derivative lime of y=mx+b?
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Is the function f(x)=x^4-6^-4+3x^2 even, odd or neither?
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A camera's flash mechanism fails on 14% of shots. If 20 shots are taken using the flash, what is the probability that the flash fails exactly twice?
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Which measure of central tendency (mean, median or mode) is most appropriate for income data and why? Give a clear explanation for your decision.
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How do you use the integral test to determine the convergence or divergence of Sigma 1/n^(1/3) from [1,oo)?
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Find the limit as x→ -∞ sech(x) ?
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What is Ramanujan summation?
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How do you solve 20^(n-2)+6.5=87?
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How do you determine the quadrant in which 3.5 radians lies?
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How can we find tan inverse of a number without calculator,for eg. Tan inverse of -1 ?
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How do you factor sec^2(x)-sec(x)+sin^2(x)*sec^2(x)?
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Y=x^(2)-2x-5
y=x^(3)-2x^(2)-5x-9
can you write the steps to find the intersection?
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How are exponential functions related to geometric sequences?
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What is the discontinuity of the function f(x) = |x-5|/(x-5) ?
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The following quiz scores measured as a discrete variable are as follows: 2, 4, 2, 5, 6, 3, 4. Find the range and the interquartile range (IQR)?
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Are disjoint events always independent?
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What is f(x) = int 2sinx-xcosx dx if f((7pi)/6) = 0 ?
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What is an example of when a limit does not exist?
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If log_4 x =3, then what is x equal to?
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How do you find vertical, horizontal and oblique asymptotes for f(x)= (6x^4-x^3+6x+5)/(x^3+1)?
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How do you convert r = 2a cosθ into a cartesian equation?