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How do I find the derivative of two functions multiplied by each other?

To find the derivative of two functions multiplied by each other we would use the product rule. The product rule: (fg)'(x) = f '(x).g(x) + f(x).g'(x) First we need to split our function into the two parts th...
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Answered by Eleanor S. Maths tutor
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Differentiate y = x(x+3)^4

To differentiate this function we use the product rule. In the product rule we, leave the first alone, differentiate the second, and leave the second alone, differentiate the first. Say y = U * V (U and V ar...
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Answered by Harry H. Maths tutor
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Integrate 1/((1-x^2)^(1/2)) by substitution

arcsin(x) + c
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Answered by Tutor94163 D. Maths tutor
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y' = (2x)/(y+1). Solve for y.

y' = dy/dx = (2x)/(y+1) Separate x's and y's in this case. y + 1 dy = 2x dx Now integrate both sides. (y 2 )/2 + y = (2x 2 )/ 2 + C Don't forget the constant. (y 2 )/2 + y = x 2 + C
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Answered by Daniel M. Maths tutor
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Find the differential of (cos2x)^2

This is a question that can be answered in two ways: using the product rule and the rule for differentiating powers, we will do both to see how the two rules are equivalent. chain rule: split the function in...
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Answered by Hoagy C. Maths tutor
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