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About LinkBacksHello all,
The problem is this:
=
I worked it out like this:
But when I enter that in, they say I am wrong. Does anybody see what I'm doing wrong on this?
Originally Posted by JohnJames
Hello all,
The problem is this:
I worked it out like this:
But when I enter that in, they say I am wrong. Does anybody see what I'm doing wrong on this?![\int_{b}^{2b}x^{3}dx=\left[ \frac{x^{4}}{4}+c\right]^{2b}_{b}=\frac{(2b)^{4}}{4}+c-(\frac{b^{4}}{4}+c)=4b^{4}-\frac{b^{4}}{4}=\frac{15b^{4}}{4}](http://latex.codecogs.com/png.latex?\int_{b}^{2b}x^{3}dx=\left[ \frac{x^{4}}{4}+c\right]^{2b}_{b}=\frac{(2b)^{4}}{4}+c-(\frac{b^{4}}{4}+c)=4b^{4}-\frac{b^{4}}{4}=\frac{15b^{4}}{4})
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