do i use substition or the chain rule?
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and the fact that
Originally Posted by zeg and the fact that so that is equal to , what am i suppose to do now
that is for when a is a constant in this case, it is a function of x, so here's my stab at it: now take your derivative, d/dx so that seems messy though. maybe there's some nice simplifications in there somewhere.
Originally Posted by zeg that is for when a is a constant in this case, it is a function of x, so here's my stab at it: now take your derivative, d/dx so that seems messy though. maybe there's some nice simplifications in there somewhere. will this work, since , then we have but i dont know what is
i'm not sure how to simplify that any further. Maybe use the Euler relations? if you can simplify with these relations, then I would do that first, then take the derivative. sorry I can't be more helpful!
Originally Posted by zeg i'm not sure how to simplify that any further. Maybe use the Euler relations? if you can simplify with these relations, then I would do that first, then take the derivative. sorry I can't be more helpful! thx, you have gave a great help already, don't worry about it
Originally Posted by zeg that is for when a is a constant in this case, it is a function of x, so here's my stab at it: now take your derivative, d/dx so that seems messy though. maybe there's some nice simplifications in there somewhere. I think you made a mistake here, (lntan(x))' = csc x sec x, so that is equal to
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