3 Questions
What is the derivative of $f(x) = -3x^2 + 7x - 15 + \frac{1}{x}$?
$f'(x) = -6x + 7 - \frac{1}{x^2}$
What is the derivative of $f(x) = (\cos(x) + 2x)(x^3 - 5)^4$?
$f'(x) = -4(\cos(x) + 2x)(x^3 - 5)^3\sin(x) + 4(\cos(x) + 2x)(x^3 - 5)^4$
What is the derivative of $f(x) = \cos(2x)x^4 + 1$?
$f'(x) = -2\sin(2x)x^4 + 4x^3$
Test your calculus skills with this quiz on finding derivatives and intervals for decreasing functions. Practice differentiating functions and identifying intervals where the function is decreasing.
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