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+--- Thread: Partial Derivative Answer (/thread-11136.html)
Partial Derivative Answer - AussieStudent - 07-29-2018 02:41 AM
Can someone please tell me why when using the partial differentiation (accessed via the "Units" key) the Cos(A) is not represented in the answer?
d/dc ((b^2)+(c^2)-2*b*c*cos(A))^(1/2)
RE: Partial Derivative Answer - Tim Wessman - 07-29-2018 05:31 AM
A-Z are predefined, numerical value variables in the home screen.
If you use capital A, even in the CAS screen, it will substitute the value for A in. Try it again with a lowercase a and it might work.
If that isn't it, can you post your screen or more steps?