Solve a definite integral by hand and also with the fx991es plus

Find the anti-derivitive/integral of x^2 form 1 to 4 by hand (power rule) and with the fx991es and compare solutions. we got 21 in both cases to confirm! Works similarly on other casio calculators (some faster, others slower) As an Amazon Associate, I earn a commission from qualifying purchases. The price is exactly the same for you with or without the code. Buy the Casio FX991ES calculator here: US - https://amzn.to/3WDgDCs UK - https://amzn.to/3WTTj3B IL - https://ksp.co.il/item/7922-66477 Or the better FX991EX: US - https://amzn.to/465I8K1 UK - https://amzn.to/3PSfiHj IL - https://ksp.co.il/item/7922-66490 Please show your support by liking, commenting, and sharing the video. See my math and calculator playlist:    • Calculator Tutorials & Tricks (FX991ES and...   other calculator video:    • How to solve and reduce a matrix to RREF o...   (solve system of equations) 📺 Subscribe to My Channel: 1. It's free (you just need a google account) 2. Stay up to date (Hit that notification bell, next to subscribe button) 3. More subscribers = More and better content 📱 Follow Me on Social Media:   / aviinfinity     / appdeomcracy     / aviparshan   https://www.eyeem.com/u/aviparshan https://www.aviparshan.com/israeldeals unitMeasure - my unit converter android app https://www.unitmeasure.xyz/ Referral and Cash back sites (support my work and get rewarded too!) https://www.aviparshan.com/refer #AmCanTech