In arabic or in japanese for exemple, how do you name variables ? How do you use the notation dy/dx ? Does it make sens for you to use se sigma for the sum ?
So unfortantly I grew up in some insane cult where they don't teach you anything non-religious, including math.
Just left the cult a few months ago (currently 19)
My actual passion is science and specific astrophysics, a career which lives on math daily.
I'm a very intelligent person and a very good student, I just really have zero knowledge about math
Any online course / youtube channel for people without learning disabillities teaching everything from the beginning?
This one question has quite literally been having me pulling my hair out.
sin^2(x) = cos^2(x), solve for all solutions in the interval [0, 2pi)
So I did sin^2(x)-cos^2(x)=0,
then sin^2(x) - (1-sin^2)=0,
leaving me with 2sin^2(x)-1=0
I cannot for the life of me figure out how to factor this and get the solutions. Help?
I understand how to get the vertex, but I don’t understand why it becomes negative because I thought absolute numbers were positive unless theirs a negative sign before the absolute lines but both are negative.
