The difference between a blue whale's heart and a African bull elephant heart is 2963.27 lbs. it will take 49 African bull elephant's heart to equal one blue whale's heart.
10
because you would do 35 divided by 7 which is 5.
5 x 2 is 10
You set the corresponding sides equal to each other and solve for x as you would in a normal equation
Substitute
![u=\ln x](https://tex.z-dn.net/?f=u%3D%5Cln%20x)
, so that
![\mathrm du=\dfrac{\mathrm dx}x](https://tex.z-dn.net/?f=%5Cmathrm%20du%3D%5Cdfrac%7B%5Cmathrm%20dx%7Dx)
. The integral is then equivalent to
![\displaystyle\int\frac{\mathrm dx}{x\ln^px}=\int\frac{\mathrm du}{u^p}=\begin{cases}\dfrac{u^{p+1}}{p+1}+C&\text{for }p\neq1\\\\\ln|u|+C&\text{for }p=1\end{cases}](https://tex.z-dn.net/?f=%5Cdisplaystyle%5Cint%5Cfrac%7B%5Cmathrm%20dx%7D%7Bx%5Cln%5Epx%7D%3D%5Cint%5Cfrac%7B%5Cmathrm%20du%7D%7Bu%5Ep%7D%3D%5Cbegin%7Bcases%7D%5Cdfrac%7Bu%5E%7Bp%2B1%7D%7D%7Bp%2B1%7D%2BC%26%5Ctext%7Bfor%20%7Dp%5Cneq1%5C%5C%5C%5C%5Cln%7Cu%7C%2BC%26%5Ctext%7Bfor%20%7Dp%3D1%5Cend%7Bcases%7D)
Then transforming back to
![x](https://tex.z-dn.net/?f=x)
gives