n = 4 values of intervals are change in By the trapezoidal rule I got 12.998638 (rounded to 6 decimal places but this is wrong.
Last edited by Jason76; Aug 3rd 2014 at 06:53 PM.
Follow Math Help Forum on Facebook and Google+
Well, you can technically pull the 13 out to do the approximation first, and multiply it back in later on. But the thing is, is it cos(x^2) or cos^2(x)?
Actually I realized what the problem is now: you are supposed to use radians, not degrees. Always switch your mode to radians for calculus.
You have your calculator in "degree mode" when you should be using radians.
View Tag Cloud