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OpenStudy (anonymous):

Calculus Question

OpenStudy (anonymous):

f(x)=In[(x+1)(x+2)], then \[f \prime(x)\]

OpenStudy (anonymous):

=

OpenStudy (schrodingers_cat):

Multiply out brackets then use the chain rule.

OpenStudy (schrodingers_cat):

Let u = x^2 +3x +2 then dy/dx = ln[u] 1/u so you then have d/dx(x^2 +3x +2)/(x^2 +3x +2) = (2x +3)/(x^2 +3x +2) Does this make sense?

OpenStudy (anonymous):

kind of

OpenStudy (schrodingers_cat):

Your just using the chain rule, so essentially your starting with with the outer most function and working way in to the innermost function.

OpenStudy (anonymous):

ok

OpenStudy (schrodingers_cat):

Also when I took the first derivative there was a typo is should be dy/du of ln[u] = 1/u.

OpenStudy (schrodingers_cat):

I hope this helps you out :)

OpenStudy (schrodingers_cat):

Remember with the chain rule you start with the derivative of the outermost function and then work your way inward in a sense, multiplying the next derivative by the derivatives of the preceding function.

OpenStudy (schrodingers_cat):

It should be *functions at the end :)

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