Problem

Suppose $\int_{2}^{4} f(x) d x=-5, \int_{2}^{7} f(x) d x=-4$, and $\int_{2}^{7} g(x) d x=2$. Evaluate the following integrals. \[ \int_{7}^{2} g(x) d x= \] (Simplify your answer.)

Solution

Step 1 :Suppose we have the integral of a function g(x) from 2 to 7, denoted as \(\int_{2}^{7} g(x) d x=2\).

Step 2 :The integral of a function from a to b is the negative of the integral from b to a. This is a property of definite integrals.

Step 3 :Therefore, the integral of g(x) from 7 to 2 is the negative of the integral of g(x) from 2 to 7.

Step 4 :Substituting the given value, we get \(\int_{7}^{2} g(x) d x = -2\).

Step 5 :Final Answer: The value of the integral \(\int_{7}^{2} g(x) d x\) is \(\boxed{-2}\).

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Source: https://solvelyapp.com/problems/B581Xxsiq1/

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