My friend showed me 1=2 proof by using derivative and I am kind of stumped. Reddit r/calculus

We start with x=1+1+..+1, with x many 1s. Then we can say x^2=x+x+...+x, with x many x's. Then we differentiate both sides and get 2x=1+1+...+1. which implies 2x=x and then 2=1. No, it's not because x=0 and we have just divided by 0. There's an even BIGGER problem for this false 1=2 proof.

This is from Reddit r/calculus Reddit: VYX4R4Fefx
-----------------------------
Support this channel and get my calculus notes on Patreon: 👉
Patreon: blackpenredpen
Get the coolest math shirts from my Amazon store 👉 https://amzn.to/3qBeuw6
-----------------------------
#calculus #bprpcalculus #apcalculus #tutorial #math

• #education
• #12_proof
• #math
• #calculus_tutorial
• #fun_calculus_problem
• #bprp_calculus_basics