How to Make and Use a Sign Table - Video 1

We learn how to make, construct, sign tables for quadratic functions, equations. This allows us to study the sign of any quadratic function and is often used to solve quadratic inequalities. The method is clearly explained with some detailed worked examples. This technique is used to determine values of x at which the function is positive, negative, or equal to zero. It is a must know for algebra, functions as well as calculus.

[@nek6234]

You explained the concept really well

[@johnkupa8885]

Better explanation than my prof.You just saved my ass..

[@otakulolo8127]

I HAVE A QUESTION!Before the zero it's supposed to be the opposite sign ,so at x-1 it must be +,+,- right or not?

[@ainikhairina5971]

i like the way you explain

[@done2913]

thank yu so much this helps me alot

[@__ICT__1288]

thanks professor

[@Daniel-rf9bf]

Please I'm looking forward to more of your videos in mathematics

[@RadfordMathematics]

Thanks for your comment Daniel!
I’m really glad they help 😊
Take good care ✌️

[@aloy8863]

thanks...it really help me

[@RadfordMathematics]

I’m really glad it helped :)
Many more tutorials in the works...
see you soon!

[@alparkoszta2835]

if x is negative we put + instead of - ?

[@zahrasadat8086]

Thank uuu

[@likejinx1]

what a savage 'y'

[@g_g...]

Great video. The “Y” though 😭

[@hawraakaraki7283]

x²

[@zehuayang3943]

6:00

[@munashe7988]

Hi