Answers edited by Yousef A.
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What is
\int ( 4x ^ { 3} + \cos x ) d x
∫
(
4
x
3
+
cos
x
)
d
x
?
What is the derivative of
y=1/2(x^2-x^-2)
y
=
1
2
(
x
2
−
x
−
2
)
?