MAT1320B Calculus I 2018
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MAT1320B Calculus I
Test 2
2018
1. Consider f (x) = x1/3 . We wish to estimate f (1.01) using a linearization of f (x).
a) Give the linearization of f (x) at an appropriate value a.
b) Use this linearization to estimate f (1.01). You do not need to simplify your answer.
2. Evaluate ì ╱ln(1 + t)、7 dt. You do not need to simplify your answer.
3. The temperature of a substance undergoing a chemical reaction is denoted by H(t). It is known that the rate of change of H(t) is given by H/ (t) = between t = 2 and t = 10 seconds. Determine the net change in H(t) between t = 2 and t = 10.
4. For each function f (x), give the general anti-derivative F (x). For this question only, no
justification required.
a) f (x) = (x + 5)7
5. Evaluate each of the following definite integrals. Show your work!
a) ì0 1 arctan(x) dx
b) ì1 4 sin( ′t(1 一) ′t) dt
c) ì1 2 2s3 e(s2 ) ds
6. We wish to evaluate ì (x2 一 2x(1)+ 10)5/2 dx using a trig substitution.
a) By choosing an appropriate trig substitution and simplfying the result, show that ì (x2 一 2x(1)+ 10)5/2 dx = ì cos3 (θ) dθ
b) Evaluate ì cos3 (θ) dθ in terms of θ .
c) Express your answer to part b) in terms of x according to the trig substitution you applied in part a). Your final answer should not include any trigonometric or inverse trigonometric functions.
7. Evaluate ì x2 (x1一 1) dx. Your answer should be valid for |í) x in the domain.
2022-03-21