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Find \(\int_0^8x \,dx\).(a) 32(b) 34(c) 21(d) 24This question was posed to me in an interview for internship.I need to ask this question from Fundamental Theorem of Calculus-1 topic in chapter Integrals of Mathematics – Class 12

Answer»

Correct choice is (a) 32

The explanation is: LET I=\(\int_0^8x \,dx\)

F(X)=\(\int x \,dx=\frac{x^2}{2}\)

Using the SECOND fundamental theorem of calculus, we get

I=F(8)-f(0)

∴\(\int_0^8x \,dx=\frac{8^2}{2}-0=32\)



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