Problem

If $\int_{3}^{-1} f(x) d x=-2$ and $\int_{5}^{3} f(x) d x=7$, then find : $\int_{5}^{-1} f(x) d x$

Solution

Step 1 :Given that \(\int_{3}^{-1} f(x) d x=-2\) and \(\int_{5}^{3} f(x) d x=7\)

Step 2 :Using the property of definite integrals, we know that \(\int_{3}^{-1} f(x) d x\) is equal to \(-\int_{-1}^{3} f(x) d x\)

Step 3 :Also, the integral of a function from a to c can be found by adding the integral from a to b and the integral from b to c. So, \(\int_{5}^{-1} f(x) d x\) is equal to \(\int_{5}^{3} f(x) d x + \int_{3}^{-1} f(x) d x\)

Step 4 :Substituting the given values, we get \(\int_{5}^{-1} f(x) d x = 7 - 2 = 5\)

Step 5 :Final Answer: The value of \(\int_{5}^{-1} f(x) d x\) is \(\boxed{5}\)

From Solvely APP
Source: https://solvelyapp.com/problems/15935/

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