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## Questions

### Subject:Pre-Calculus

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Question:

What is the average rate of change of f(x)=2x+5 ?

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For a linear function the average rate of change would be the slope which is 2 in this case

### Subject:Trigonometry

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Question:

What is the different forms of cos(2x) ?

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1) cos(2x)=(cosx)^2 - (sinx)^2 2) cos(2x) = 2(cosx)^2 -1 3) cos(2x) = 1-2(sinx)^2

### Subject:Calculus

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Question:

Find the derivative of each of the following function and simplify f(x)=4x^3 −3x^2 +2x−π

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f'(x)=4(3x^2)-3(2x^1)+2(x^0)-0 so f'(x)=12x^2-6x+2

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