Thanks a lot for your help Doc.
As for the 2nd problem, I noticed that in the book they find that the height of the rocket when t=10 is 5000 feet. Exactly how did they find this?
An airplane is flying on a flight path that will take it directly over a radar tracking station. If (s) is decreasing at a rate of 400 miles per hour when s=10 miles, what is the speed of the plane?
Can someone explain in indepth response including reasons why each steps were taken. Thank you!
Radou - with the equation of you gave me, I noticed you said first take g'(x)h(x) - g(x)h'(x)
should it not be g(x)h'(x) - h(x)g'(x)?
edit- ahhhhhhhhhhhhh my fault read it wrong. thanks radou.
What do you use to put in the functions so it appears that way? that is neat!
I'll try doing what you say and I'll see if it works. Thanks a bunch!
BTW, i editted the question. I'm sorry about the typo!
EDIT -
I just noticed... I used addition instead of subtraction... DOH! This is what...
f(x)=2x^3-1/x^2first I did this:
I used the quotient rule to get:
1.x^2(2x^3-1) + 2x^3-1(x^2)
2.x^2(6x^2) + 2x^3-1(x^2)
3.6x^4 + 4x+4 -2x
4.2x(3x^3+2x^3-1)/x^4
and I arrived with my final answer:
2x(3x^3+2x+3-1)/x^4
I know I got it wrong. But I would love to know why
and what I should...