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Calculus
Found in: Page 777
Calculus

Calculus

Book edition 1st
Author(s) Peter Kohn, Laura Taalman
Pages 1155 pages
ISBN 9781429241861

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Short Answer

q

The summary of the material for the topic "Area Accumulation". is:

  • Differentiating a composition involving an area accumulation function.
  • Properties of the natural logarithm function.
See the step by step solution

Step by Step Solution

Step 1. Given Information.

  • The area accumulation functions
  • The second fundamental theorem of calculus
  • Differentiating a composition involving an area accumulation function
  • Properties of the natural logarithm function

Step 2. Explanation

If function f is continuous on the interval [a,b].

The signed area between the graph of f and the x-axis is given by the definite integral abf(x)dx is equal to the area accumulation function.

If f is continuous in the interval [a,b] and u(x) is differentiable on [a,b] then for all x[a,b]

ddxau(x)f(t)dt=f(u(x))u'(x)

Properties of the natural logarithm function:

lnx is continuous on (0,)

lnx is differentiable on (0,)

d(lnxdx=1xln1=0lnx<0 on (0,1)lnx>0 on (1,)lnx is increasing on (0,)lnx is concave down on (0,)

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