$\frac{2x^2}{x}$

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Calculus - Take the log of both sides to find the derivative, y = (x(x^2 + 1)^2)/(sqrt(2x^2 - 1))

https://www.youtube.com/watch?v=7aF6Ck6ZRxw

Algebra 2 - Evaluating functions for numeric values, p(x) = 2x^2 - 4x + 1. Find p(2) and p(-1)

https://www.youtube.com/watch?v=POdNjomXHWA

Algebra 2 - How to use the zero product property to solve for the intercepts, f(x) = 2x^2 + 7x - 30

https://www.youtube.com/watch?v=Km8b4e3Yb34

Example 4: Adding and subtracting polynomials | Algebra I | Khan Academy

https://www.youtube.com/watch?v=DMyhUb1pZT0

Algebra 2 - Determine and describe the discriminant 5x^2 - x -1 = 0

https://www.youtube.com/watch?v=F3eTBxCnzvI

Another substitution with x=sin (theta)

https://www.youtube.com/watch?v=8Yl_u_Otcjg

Function Plot

Plotting: $2x$

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5
6
7
8
9
0
a
b
c
d
f
g
m
n
u
v
w
x
y
z
.
(◻)
+
-
×
◻/◻
/
÷
2

e
π
ln
log
log
lim
d/dx
Dx
|◻|
θ
=
>
<
>=
<=
sin
cos
tan
cot
sec
csc

asin
acos
atan
acot
asec
acsc

sinh
cosh
tanh
coth
sech
csch

asinh
acosh
atanh
acoth
asech
acsch

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