If y = (cosx + sinx)/(cosx - sinx) , Prove that dy/dx = sec²(x + pi/4 )

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If y = (cosx + sinx)/(cosx - sinx) , Prove that dy/dx = sec²(x + pi/4 )
y= cosx+sinx/cosx - sinx , show that dy/dx= sec square (pi/4 +x)
If y = (cosx + sinx)/(cosx - sinx) , prove that dy/dx = sec^2 (x + pi4 )
y= cosx+sinx/cosx - sinx , show that dy/dx= sec square (pi/4 +x)
If y = (cos x + sinx)/(cos x - sinx), show that (dy)/(dx) = sec^(2) (x + (pi)/(4)).
#math #calculus
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Very useful Thank-you somuch finally found this sum

tamilnewturn