-1=1 and no dividing by 0? Where is the error here? Integral of e^x*cosh(x), Reddit r/calculus

We end up with -1=1 from the integral of e^x*cosh(x) so where is the error? There was no dividing by 0 during this integration by parts process. This tutorial will reveal the error. This problem is from Reddit r/calculus https://www.reddit.com/r/calculus/s/2i27Oa4MUE 0:00 -1=1 5:39 Integral of e^x*cosh(x) ----------------------------- Support this channel and get my calculus notes on Patreon: 👉 https://www.patreon.com/blackpenredpen Get the coolest math shirts from my Amazon store 👉 https://amzn.to/3qBeuw6 ----------------------------- #calculus #bprpcalculus #apcalculus #tutorial #math