Luas daerah yg dibatasi kurva y= -x²+2x+3, y= x²-4x, garis x=1 dan x=3 adalah
whongaliem
![L = [ -\frac{2}{3} (1)^{3} + 3 ( 1)^{2} + 3(1)] - [ - \frac{2}{3} (3)^{3} + 3 ( 3)^{2} + (3 (3)]](https://tex.z-dn.net/?f=L+%3D+%5B+-%5Cfrac%7B2%7D%7B3%7D++%281%29%5E%7B3%7D+%2B+3+%28+1%29%5E%7B2%7D+%2B+3%281%29%5D+-+%5B+-+%5Cfrac%7B2%7D%7B3%7D++%283%29%5E%7B3%7D+%2B+3+%28+3%29%5E%7B2%7D+%2B+%283+%283%29%5D "L = [ -\frac{2}{3} (1)^{3} + 3 ( 1)^{2} + 3(1)] - [ - \frac{2}{3} (3)^{3} + 3 ( 3)^{2} + (3 (3)]")
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