Area from antiderivative of curve to x-axis

Konglomo
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I'm trying to find the area between the antiderivative of the curve y = 5x3 - 23x2 - x + 3 passing through the point (1, e) and the x-axis from x = 1/√2 to x = 17π/11, to 3 significant figures.
I'm self teaching myself calculus, and this has me stumped.
 
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FYI, I have moved your post to our Homework & Coursework Questions area, since any text-book style question should be posted there, even if it's for independent study and not actual schoolwork.

The way it works on our forums, for problems like this, is: you the "student" show how far you got with the problem, or show what you think is involved in the solution. For this problem, you could work out the antiderivative of y as a starting point...
 
There are two things I don't understand about this problem. First, when finding the nth root of a number, there should in theory be n solutions. However, the formula produces n+1 roots. Here is how. The first root is simply ##\left(r\right)^{\left(\frac{1}{n}\right)}##. Then you multiply this first root by n additional expressions given by the formula, as you go through k=0,1,...n-1. So you end up with n+1 roots, which cannot be correct. Let me illustrate what I mean. For this...
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