find the average calue of the function y=x^2+x+2 from x=0 to

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find the average calue of the function y=x^2+x+2 from x=0 to x=4.
value not calue

找到函数的平均值
x=0,y=2
x=1,y=4
x=2,y=8
x=3,y=14
x=4,y=22
(2+4+8+14+22)/5=10
再问： x可以等于1.1 1.11。。。。。
再答： ∫（0,4）x^2+x+2 dx=4^3/3+4^2/2+4*2=37.33 the average value =37.33/4=9.33 【？】
再问：这个不是求面积的吗
再答：好像是的。
再问：为什么是除以4呢它的X不是有很多值吗
再答： from x=0 to x=4.

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