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August 3, 2015

Homework Help: Maths Derivatives & Calulus

Posted by Yousef on Friday, October 21, 2011 at 5:42am.

1) Find d^2y / dx^2 given that y^3 - x^2 = 4


2)If y = x + ( 1 / x ) , prove that

x^2 . y'' + xy' a^2 . y = 0


3) Find dy/dx for the following function.
cos ( x - y ) = ( y ) ( 2x + 1 ) ^3

4)Find the values of A and B that make f(x) differentiable at
x = 0

f(x) = A + 2x + 3, if x > 0
AND
f(x) = 5 + B (sinx / |x|) , if x < 0

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