9 Problems on Calculus - Second Midterm Examination - Fall 2004 | MATH 1A, Exams of Calculus

Material Type: Exam; Professor: Haiman; Class: Calculus; Subject: Mathematics; University: University of California - Berkeley; Term: Fall 2004;

Typology: Exams

2010/2011

Uploaded on 05/11/2011

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Math 1A, Calculus Second Midterm Exam Haiman, Fall 2004
Name Student ID Number
Section
You may use one sheet of notes. No other notes, books or calculators. There are 9
questions, on front and back. Write answers on the exam and turn in only this paper. Show
enough work so that we can see how you arrived at your answers.
1. (10 pts) Find d2
dx2(sec x).
2. (12 pts) Differentiate x(ex).
3. (10 pts) If h(x) = f(g(x)) and f(0) = 0, g(0) = 1, f0(0) = 2, g0(0) = 3, f0(1) = 4,
g0(1) = 5, find h0(0).
4. (12 pts) If x2+y3= 17 and dx/dt = 10, find dy/dt when x= 3.
5. (11 pts) A cube is measured to be 6cm on each side, with a possible error of ±.5cm.
Use a linear approximation or differentials to estimate the error in computing the volume of
the cube.
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Math 1A, Calculus Second Midterm Exam Haiman, Fall 2004

Name Student ID Number

Section

You may use one sheet of notes. No other notes, books or calculators. There are 9 questions, on front and back. Write answers on the exam and turn in only this paper. Show enough work so that we can see how you arrived at your answers.

  1. (10 pts) Find d

2 dx^2 (sec^ x).

  1. (12 pts) Differentiate x(e x) .
  2. (10 pts) If h(x) = f (g(x)) and f (0) = 0, g(0) = 1, f ′(0) = 2, g′(0) = 3, f ′(1) = 4, g′(1) = 5, find h′(0).
  3. (12 pts) If x^2 + y^3 = 17 and dx/dt = 10, find dy/dt when x = 3.
  4. (11 pts) A cube is measured to be 6cm on each side, with a possible error of ±.5cm. Use a linear approximation or differentials to estimate the error in computing the volume of the cube.
  1. (12 pts) Find all local and absolute minima and maxima of the function f (x) = x^2 (x + 6) on the interval [− 5 , 3].
  2. (11 pts) Verify that f (x) = x^3 + x − 1 satisfies the hypotheses of the Mean Value Theorem on the interval [0, 2], and find all points c for which the conclusion of the Mean Value Theorem holds.
  3. (10 pts) Compute lim x→ 0

x + x^2 ex^ − e−x

  1. (12 pts) Use the information below to sketch the graph of y = (x − 1)/x^2. Show any local or absolute maxima and minima and any inflection points by plotting them on your sketch and labelling them with their x and y coordinates.
  • The domain of f (x) = (x − 1)/x^2 is (−∞, 0) ∪ (0, ∞).
  • limx→ 0 + (x − 1)/x^2 = limx→ 0 − (x − 1)/x^2 = −∞.
  • limx→∞(x − 1)/x^2 = limx→−∞(x − 1)/x^2 = 0.
  • y = 0 at x = 1, y < 0 on (−∞, 0) ∪ (0, 1), and y > 0 on (1, ∞).
  • y′^ = (2 − x)/x^3 ; y′^ = 0 at x = 2, y′^ < 0 on (−∞, 0) ∪ (2, ∞), and y′^ > 0 on (0, 2).
  • y′′^ = (2x − 6)/x^4 ; y′′^ = 0 at x = 3, y′′^ < 0 on (−∞, 0) ∪ (0, 3), and y′^ > 0 on (3, ∞).