Posted by Kevin on Thursday, February 28, 2013 at 6:56pm.
1. dy/dx = 12x^5 /(2x^6 - 15) ---- routine
2. dy/dx = 6√2 x - 3 ---- routine
3. the way you typed it,
y = x^4/x^2 + 1
y = x^2 + 1
dy/dx = 2x
if you meant x^4/(x^2+ 1) , then you would use the quotient rule. See how critical it is to use brackets ?
there is no brackets for question 3. Although i am still confused. would you be able to give step by step solutions?
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