Answers edited by dansmath

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How do you find the equation of the tangent to the curve $x = t^{4} + 1$ $x=t^4+1$ , $y = t^{3} + t$ $y=t^3+t$ at the point where $t = - 1$ $t=-1$ ?
How do I find a logistic function from its graph?
What is the derivative of $f (x) = ln (cos (x))$ $f(x)=ln(cos(x))$ ?
How do you convert $r = 5 cos (t)$ $r = 5 cos (t)$ into cartesian form?
How do logistic and exponential growth differ?
How do you find the inflection point of a cubic function?
How do you use the direct Comparison test on the infinite series $\infty \sum n = 1 \frac{1 + sin (n)}{5^{n}}$ $sum_(n=1)^oo(1+sin(n))/(5^n)$ ?
What is the arclength of $(2 t^{2} - t, t^{4} - t)$ $(2t^2-t,t^4-t)$ on $t \in [- 4, 1]$ $t in [-4,1]$ ?