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July 29, 2014

July 29, 2014

Posted by **anon** on Sunday, March 6, 2011 at 1:08am.

A. 30━

B. 45━

C. 60━

D. 90━

not sure A or D

2.) which of the following represents dy/dx when y=e^-2x Sec(3x)?

A.3e^-2x sec(3x) tan (3x)-2e^-2x Sec(3x)<<<< my choice

B.)3e^-2x sec(3x)tan (3x)-2xe^-2x sec(3x)

C.)3e^-2x sec(3x)tan (x)-2e^-2x Sec(3x)

D.)3e^-2x sec(3x)tan (x)-2xe^-2x sec(3x)

3.)calculate dy/dx if y=Ln(2x^3+3x)

A.)1/2x^3+3x

B.)1/6x^2+3

C.)2x^3+3x/6x^2+3

D.)6x^2+3/2x^3+3x <<<< my choice

Thank you!

- Calculus 12th grade (double check my work please) -
**Jay**, Thursday, June 7, 2012 at 12:41am2 and 3 are right.

the first one is a trick question. It is a circle, so the tangent line is always 90 degrees to the radius

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