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- HP Prime - Implicit Differentiation and Logarithmic Differen...

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05-31-2014 02:45 PM
Good day everyone!
I can't figure out how to do implicit differentiation and logarithmic differentiation on the Prime.
For instance, I am trying to find y' for this equation.
x^2 + y^2 = ln (x + y)^2
Solving the question manually, I know that the answer is
y'= (-x^2 - xy + ln(x + y)) / (y^2 + x y - ln(x + y))
I hope you can help me please!
Thanks!
Solved! Go to Solution.
Accepted Solutions
06-02-2014 03:39 PM
Hello,
There is no specific command for it. Basically, this is the steps:
1. Put everything on one side
2. Store as a variable
3. dx/dy
Example:
eq:=x^2 + y^2 - ln (x + y)^2
eq'/(eq,y)' ( or diff(eq)/diff(eq,y) )
Then simplify your result.
Although I work for the HP calculator group as a head developer of the HP Prime, the views and opinions I post here are my own.
06-02-2014 03:39 PM
Hello,
There is no specific command for it. Basically, this is the steps:
1. Put everything on one side
2. Store as a variable
3. dx/dy
Example:
eq:=x^2 + y^2 - ln (x + y)^2
eq'/(eq,y)' ( or diff(eq)/diff(eq,y) )
Then simplify your result.
Although I work for the HP calculator group as a head developer of the HP Prime, the views and opinions I post here are my own.
