Evaluate integral from -2 to 3 of 4 lxldx

1 answer

Integrate -2 to 0 and 0 to 3 separately, and add the results.

The indefinite integral of 4x dx is 2x^2. For -4x dx (or 4 |x| dx for x <0), it is -2x^2.
I get 2*4 + 2*9 = 26

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