confuesd..help??????? (1 Viewer)

[we0426]

can some on plzz help me in this question...i dont have the answer for this question and i want to know if i am doing it right???

and i know u all know what it means but just to make sure x^2 means (x squrd)


the gradient of a curve is given by....

2x
dy/dx= --------
x^2 +e

THe curve pasess through the pts(0,2)

what is the equation of the curve??

 

[annabackwards]

If you integrate (dy/dx) you get y = int (dy/dx) = int (2x / x^2 +e) = Ln (x^2 +e) + c

Therefore y = Ln (x^2 +e) + c

Sub in (0, 2)
2 = Ln (0^2 + e) + c
So c = 2 - Ln e = 2 - 1 = 1

Therefore equation of curve is y = Ln (x^2 +e) + 1

 

[we0426]

If you integrate (dy/dx) you get y = int (dy/dx) = int (2x / x^2 +e) = Ln (x^2 +e) + c

Therefore y = Ln (x^2 +e) + c

Sub in (0, 2)
2 = Ln (0^2 + e) + c
So c = 2 - Ln e = 2 - 1 = 1

Therefore equation of curve is y = Ln (x^2 +e) + 1

OMG I AM RIGHT...THANK U SOO MUCH...


LOVE U..TO BITSSS..:uhhuh:

 

[Drongoski]

I cannot understand yr question> But assuming it is:

 

[annabackwards]

I cannot understand yr question> But assuming it is:

Everything looks so much prettier in Latex ^^

 

[we0426]

I cannot understand yr question> But assuming it is:

YESS PERCSISLY....OH..WAIT LOL..HOW DO U WRITE UR MATHS QUESTION LIKE THAT.....I WANT TO LEARN 2:uhhuh:

 

[annabackwards]

YESS PERCSISLY....OH..WAIT LOL..HOW DO U WRITE UR MATHS QUESTION LIKE THAT.....I WANT TO LEARN 2:uhhuh:

There's a button at the bottom where you reply called "Launch LaTex Equation Editor". Just click the quick reply button before you click that and you can write equations like Drogonski did

 

[we0426]

There's a button at the bottom where you reply called "Launch LaTex Equation Editor". Just click the quick reply button before you click that and you can write equations like Drogonski did

hahaah..thanks thats soo..i mean soo..SOO coollllllll