Question

How do you get the x value in this equation? http://i1220.photobucket.com/albums/dd441/smileesue/math.jpg

I know you're supposed to sub y=2 into the original equation and solve for x but I can't seem to do that... can somebody please help me?

Answer 1

btw, the part that is cut off in the integral is 'xy'

Answer 2

Can anyone help me? 3.41 x 1,3019234 divided by 12347 x 8 + your age - 1804351 x 235-135425 squaredx 10 to the fifth power + 1- 1243818723847

Answer 3

@Fweaa , stop doing that. Bump your question, instead of harassing the other users.

Answer 4

diferentiate implicitly

Answer 5

so do you have to sub y=3 after the implicit differentiation instead of the original equation?

Answer 6

At first, you substitute y = 2, then the integral part is cancel:
( 1 + x³ ) 4 = 112
=> x = 2
Then sub x = 3 to calculate the integral
It seems like you need to let t = tanu

Answer 7

I mean => x = 3

Answer 8

How does the integral part get cancelled by substituting y = 2? Can't you substitute y =2 into the integral as well (ie. into xy and 2x)?

Answer 9

It canceled because when you sub y = 2, the upper and lower bound equal = 2x
=> x = 3
Now use x = 3 to solve.

Answer 10

Oh, I see. Thanks!