Hi.. New at this site, hope I'm posting these stuff on the write place....(adsbygoogle = window.adsbygoogle || []).push({});

well i had these question below for review for an exam, hope someone can help me solve them, i did my solution in Paint program and on paper and am linking where i uploaded them, ( image shack)

-Find the second derivative

1)y=2x^3e^4x

solution

http://img519.imageshack.us/img519/1610/pictureorvideo004sf6.th.jpg [Broken]

2)y=√(x^3+e^-x+5)

** for where 'e^-x' i think the question is wrong,, i think it should be e^x, not sure??

solution

http://img340.imageshack.us/img340/6392/pictureorvideo005fp2.th.jpg [Broken]

3)Find the second derivative of 'y' with respect to "x" where

y=x^2/X^2

solution

http://img340.imageshack.us/img340/6238/pictureorvideo007rt7.th.jpg [Broken]

4)Find the equation of 2 lines, each of slope 5, that are tangent to y=x^3+2X

5) Find the asymptotes for

f(x)=x/√(4x-1)

6)A dragster accelerates down a strip adn then brakes, adn comes to stop. Its position function, s(t) is given by s(t)=3t^2-1/5t^3, s'(t) in meters, 't' in seconds

a) when does the dragster come to a stop

b) how far has the dragster traveled.

Solution

http://img340.imageshack.us/img340/8870/5aso0.th.png [Broken]

7) Find the polynomial with second degree that goes through (1,-1) and whose slope is 1, When x=-1 and where slop is 19, when x=2

solution

http://img457.imageshack.us/img457/3368/pictureorvideo003mp2.th.jpg [Broken]

8) A helicopter takes off from landing pad at 10:48AM and travels south at 150KM/h is planning to land at 10:56AM.

a) how far is the distance between them changing at 10:50AM( to 2 decimal place)

b) Is the distance between them increasing or decreasing at this instant?

I couldn't answer 4,5,8... please help me with them...and check solution

thank you ...

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# Homework Help: Home school Calculas( high school level)

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