AB/AP Calculus Free Response Question 1a

[Kill3rJay]

Dood, i skipped a free response in the AP exam and still got a 5 like a boss! :D

[maxazria11]

i have done this question over and over and i get (y-x)/(4y-x)

why is mine a negative answer? its killing me!!

[eisenheim46]

@maxazria11 Maybe you've mistaken 8y dy/dx to be a negative and so when you transfer it to the side of the 0 it became a positive.



[binsy186]

im like watching ur video 3 days before ma AP exam and it helps !! :) awesommmeeee !

[dovc2films]

Correct me if I'm wrong, but isn't the product rule, f(x)g'(x)+g(x)f'(x)? If so in the parenthesis of (xy) it would be ((x)(1)dy/dx+(y)(1))

[redrussia1988]

@dovc2films

your not wrong but neither is he. What he did was use the product rule with some twist. He followed

f'(x)g(x) + f(x)g'(x)

hope this helps

[coolly94]

@dovc2films since it's adding, you can do which ever way and it will still be correct.

[darrenkills]

Taken from this book:

0375429158

[Fullperson]

nice

[bboydjoe]

u rock!

[karthikaikumar]

Thx a lot Patrick, I was wondering if you can do this question, because it came up.

The Intergral of (sin(x) x cos(x))^2

This will be greatly appreaciated thx

[stupidpablo1]

@karthikaikumar

Use substitution.

Substitute cos(x) = u

Then find the derivative of u and solve for dx in terms of du and sin(x).

Then integrate.

The plug your values back in.

That was eleven months ago, so I assume you solved it or lost interest by now.

[fldoughboy72]

Ok, Patrick..you're dragging it out now..lol