Engineering Integration Maths Questions

Calculate the area between 2 curves integration 4 questions

1/ between 3 and 1 (x+1)^2 d.x

2/ between 4 and 1 (2x+1)(x-2) d.x

3/ between + 0.001 and -0.001 50 cos(50 pi t) d.t

4/ between pi/3 and 0 10 sin (2t- pi/3)d.t

thanks, please show all working



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