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Active Calculus

Section 9.1 Review of Prerequsites

Exercises Exercises

1.

Let \(P\) and \(Q\) be polynomials.
Find \(\displaystyle \lim_{x \to \infty} \frac{P(x)}{Q(x)}\)
if the degree of \(P\) is (a) less than the degree of \(Q\text{,}\) and (b) greater than the degree of \(Q\text{.}\) If the answer is infinite, enter "I" below.
(a)
(b)

2.

Evaluate the limit using L’Hospital’s rule if necessary.
\begin{equation*} \lim_{ x \rightarrow +\infty } \frac{x^{11}}{e^x} \end{equation*}
Answer:

3.

Suppose that \(f(x) = -5 x^2 + 8\text{.}\)
(A) Find the slope of the line tangent to \(f(x)\) at \(x=-6\text{.}\)
(B) Find the instantaneous rate of change of \(f(x)\) at \(x=-6\text{.}\)
(C) Find the equation of the line tangent to \(f(x)\) at \(x=-6\text{.}\) \(y=\)

4.

Differentiate the following function:
\begin{equation*} \displaystyle f(t) = \sqrt[3]{t}-\frac{1}{\sqrt[3]{t}} \end{equation*}
\(f'(t)=\)

5.

Find the derivative of \(y = 8^x + 7\text{.}\)
\({dy\over dx} =\)

6.

Use the Product Rule to find the derivative of \(f\text{.}\)
\(f(x) = \csc\!\left(x\right)\tan\!\left(x\right)\)
\(f'(x) =\)

7.

Differentiate \(\displaystyle y =\frac{x}{\cos{x}}\text{.}\)
\(y'=\)

8.

If \(f(x) = 5 \cos(3\ln(x))\text{,}\) find \(f'( x )\text{.}\)
Answer:

9.

Consider the function \(f(t) = 9 \sec ^2(t) - 9 t^ { 3 }\text{.}\) Let \(F(t)\) be the antiderivative of \(f(t)\) with \(F(0) = 0\text{.}\) Find \(F(t)\text{.}\)
Answer:

10.

\(\displaystyle \int_0^{5} (4 e^x+5 \sin x)\, dx\) =
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