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Find \(\int_{-2}^1 \,5x^4 \,dx\).(a) 54(b) 75(c) 33(d) 36The question was asked at a job interview.This interesting question is from Fundamental Theorem of Calculus-1 topic in division Integrals of Mathematics – Class 12

Answer»

The correct answer is (C) 33

Best explanation: \(I=\int_{-2}^1 \,5x^4 \,dx\)

F(x)=\(\int5x^4 \,dx=5(\FRAC{x^5}{5})=x^5\)

Applying the limits by using the fundamental theorem of calculus, we get

I=F(1)-F(-2)

=(1)^5-(-2)^5=1+32=33.



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