Hello,
Can someone please help me with integrating this problem?
Thanks,
Assuming you mean $\displaystyle \displaystyle \int_1^t{\frac{e^{\frac{1}{x^7}}}{x^8}\,dx} = -\frac{1}{7}\int_1^t{e^{\frac{1}{x^7}}\left(-\frac{7}{x^8}\right)\,dx}$, make the substitution $\displaystyle \displaystyle u = \frac{1}{x^7} \implies du = -\frac{7}{x^8}\,dx $ and make note that $\displaystyle \displaystyle u(1) = 1$ and $\displaystyle \displaystyle u(t) = \frac{1}{t^7}$.