$\left.\left(\frac{2x^3}{3} - 4x^2 + 10x\right) \right|_1^3 = 12 - 20/3$
I guess my first question would be what is the meaning of the line in this equation. I was under the impression it is meant to represent a range of x values. However I'm not sure how both sides are equal or how one would go about solving this.