Differentiate 3x^(3) + 7x^(2) -4x
Using the formula for differentiation: if y=axN then dy/dx= Na*xN-1 apply this to each term in the equation given; first term: dy/dx= 9x2second term: dy/dx= 14xthird term: dy/dx= - 4Combining all three this gives: dy/dx= 9x2 + 14x - 4
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