C4 - Integration question!
So there's some liquid in a tank which is leaking...and you're told dh/dt = -0.02(h^-1/2)
The question then says find the time taken to the nearest minute for the height of liquid to go from 100cm to 50cm. (where h = height of liquid and t = t minutes)
I can get to: time taken = integral going from 100 to 50 of -50(h^-1/2). Where am i going wrong, cause that answer is negative!
Thanks a lot!
Never mind, I've just made the most stupid mistake. I didn't even integrate the h^-1/2....I just put the limits straight in! My god..
The question then says find the time taken to the nearest minute for the height of liquid to go from 100cm to 50cm. (where h = height of liquid and t = t minutes)
I can get to: time taken = integral going from 100 to 50 of -50(h^-1/2). Where am i going wrong, cause that answer is negative!
Thanks a lot!
Never mind, I've just made the most stupid mistake. I didn't even integrate the h^-1/2....I just put the limits straight in! My god..
(edited 10 years ago)
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