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Homework Statement
find dy/dx at x=-1 .
Homework Equations
sin ysin pi*x/2 + 31/2/2(sec-12x) +2x(tan(ln(x+2)))=0
The Attempt at a Solution
There is coming a term ln(sin pi*x/2) during differentiation which will be a ln of a negative number. Sorry if the problem is too easy .I am just starting differentiation.