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21/root 7 = 21root7/7 = 3root7
k = 3
A) 15x2 +7
B) 30x
To get dy/dx from a formula y in terms of x we must differentiate y with respect to x. Generic formula for term differentiation: d/dx(ax^b) = bax^b-1 = times the coefficient by the power and minus the pow...
Before we get started with answering the question, it is generally good practice to write down any formulas and equations you know that will help us work through the solution. So what formula do we know t...
-cos(2x)/(x2) - 2sin(2x)/(x)
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