how do you find dy/dx implicit differentiation
whatever exponent is on the top, replace with dy/dx
find the derivative
solve for dy/dx
Find dy or dx /dt given the opposite and a point
find the derivative and multiply by d/dt
solve for the thing you’re trying to solve for
plug in numbers
volume of a sphere problems
find the derivative of volume and multiply it by dr/dt
plug in known values
chain rule
derivative of outside of function (leave inside alone) * derivative of inside of function
when do you use the chain rule?
when you have a function inside and something outside
ex. sin 3x-> yes
sinx-> no
when do you use the chain rule more than once?
when you use the chain rule and there are 2 or more functions left, usually with more than x
chain rule with a square root
convert to an exponent
rewrite as 1/2√(x)^-1/2 x’
write as y= x’/2√x
ex. √3x^2 -> 6x/2√3x^2+1
How do you find a derivative when given a rule and a list of values
Identify the rule
Plug in the given numbers for the regular and derivative as necessary
Simplify
implicit differentiation
take the derivative of both sides for x
x is regular derivative
multiply y by dy/dx
solve for dy/dx
do you have to use the product rule?
YESSSSSSSSSSSS
2nd implicit differentiation
take the derivative again
take y out and find the derivative + multiply by dy/dx
plug back in * multiply by dy/dx
plug in original dy/dx
d/dx sin⁻¹
1/√1-x²
d/dx tan⁻¹
1/x²+1
d/dx sec⁻¹
1/|x|*√x²-1
d/dx cos⁻¹
-1/√1-x²
d/dx cot⁻¹
-1/x²+1
d/dx csc⁻¹
-1/|x|√x²-1
d/dx e^x
e^x
d/dx A^x
A^x * lnA
d/dx |x|
x/|x|
d/dx lnx
1/x
d/dx logAx
1/x*lnA