diffrentiate the functions w.r.t.x: (x+3) (x-4) /x
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y = (x+3)(x-4)/x = (x^2 - x - 12)/ x
Apply the rule for differentiation of a fraction.
y' = [ x * (2 x - 1) - (x^2 - x -12)*1] /x^2
= (x^2 + 12)/x^2
= 1 + 12/x^2
Apply the rule for differentiation of a fraction.
y' = [ x * (2 x - 1) - (x^2 - x -12)*1] /x^2
= (x^2 + 12)/x^2
= 1 + 12/x^2
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