Calculus

posted by .

Let f be a twice-differentiable function defined on the interval -1.2 less than or equal to x less than or equal to 3.2 with f(1)=2. The graph of f', the derivative of f, is shown on the right. The graph of f' crosses the x-axis at x=-1 and x=3 and has a horizontal tangent at x=2. Let g be the function given by g(x)=e^(f(x)).

View graph here: h t t p : / / a s s e t s . o p e n s t u d y . c o m / u p d a t e s / a t t a c h m e n t s / 5 0 d 1 e f f a e 4 b 0 6 9 a b b b 7 1 0 d 3 9 - b l a d e r u n n e r 1 1 2 2 - 1 3 5 5 9 3 5 7 7 5 8 1 7 - g r a p h . p n g


1. Write an equation for the line tangent to the graph of g at x=1. 2. For -1.2 is less than or equal to x is less than or equal to 3.2, find all values of x at which g has a local maximum. Justify your answer. 3. The second derivative of g is g''(x)=x^(f(x)) [(f'(x))^2 + f''(x)]. Is g''(-1) positive, negative, or zero? Justify your answer. 4. Find the average rate of change of g', the derivative of g, over the interval [1,3].

  • Calculus -

    1.
    g(x) = e^f(x)
    g'(x) = e^f(x) f'(x)
    g'(1) = e^f(1) f'(1) = e^2 (-4) = -4e^2
    g(1) = e^f(1) = e^2
    so, you want the line through (1,e^2) with slope -4e^2:
    y-e^2 = -4e^2 (x-1)

    2.
    g has a max where g' = 0
    since e^f > 0 for all x, g'=0 when f'=0. So, g has a max/min at x = -1 or x=3
    Since f''<0 at x=-1, g is a max at x = -1.

    3.
    e^f > 0
    f'(-1) = 0
    f''(-1) < 0
    so, g''(-1) < 0

    4.
    g'(3) = e^f(3) f'(3) = 0
    g'(1) = -4e^2 as above
    avg change is
    (g'(3)-g'(1))/(3-1) = (0- -4e^2)/2 = 2e^2

  • Calculus -

    Two particles move along the x -axis. For 0 is less than or equal to t is less than or equal to 6, the position of particle P at time t is given by p(t)=2cos((pi/4)t), while the position of particle R at time t is given by r(t)=t^3 -6t^2 +9t+3.

    1. For 0 is less than or equal to t is less than or equal to 6, find all times t during which particle R is moving to the left. 2. for 0 is less than or equal to t is less than or equal to 6, find all times t during which the two particles travel in opposite directions. 3. Find the acceleration of particles P at time t=3. Is particle P speeding up, slowing down, or doing neither at time t=3? Explain your reasoning. 4. Show that during the interval (1,3), there must be at least one instant when the particle R must have a velocity of -2.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Math/Calculus

    Find k so that the following function is continuous on any interval: f(x)= kx 0 (less than or equal to) x (less than) 2 3x^2 2 (less than or equal to x) i know the answer is 12 but i don't know how to arrive at that. could you please …
  2. alg

    the viewing window is defined by -3 is less than or equal to x is less than or equal to 7 and 10 is less than or equal to y is less than or equal to 30. give the approximate coordinates of a) the x-intercepts, b) the y-intercepts and …
  3. MATH

    Give a response of at least 50 words to the following: Describe the graph of the interval [-4, 3). • Explain how this differs from the graph of the interval [-4, 3]. From the question above, does the answer below sound right?
  4. algebra

    how do you graph the function... f(x)=2^x over the interval -2 is less than or equal to x is less than or equal to 3. Help please! THANKS!
  5. Calculus

    Consider the function f(x)=6x-cos(x)+5 on the interval 0 is less than or equal to x, and x is less than or equal to 1. The Intermediate Value Theorem guarantees that there is a value c such that f(c)=k for which values of c and k?
  6. calculus

    Consider the function f(x)=65x−cos(x)+2 on the interval 0 less than or equal to x less than or equal to 1. The Intermediate Value Theorem guarantees that there is a value c such that f(c)=k for which values of c and k?
  7. Algebra 2

    Okay so I need help with basically how to find the domain, range, and how to solve if it says Find the value of f(3). Let the f function be defined by f(x) = the square root of x + 1 for -1 is less than or equal to x less than or equal …
  8. Calculus c

    Let f be a twice-differentiable function defined on the interval -1.2 less than or equal to x less than or equal to 3.2 with f(1)=2. The graph of f', the derivative of f, is shown on the right. The graph of f' crosses the x-axis at …
  9. math

    The function f(x)is defined as f(x)={-2x+3: if -2 less than or equal to < 1 f(x)={5: if 1 less than or equal to x less than or equal to 2 f(x)={x^2+2: if x > 2 a. find f(0), f(2) and f(5) b. determine the domain of f(x) Please …
  10. algebra

    graph the following function on the set of axes below. f(x) = lxl, -3 less than or equal to x less than 1 and 4, 1 less than or equal to x less than or equal to 8

More Similar Questions