Estimate the area under the graph of f(x)= 1+x^2 from X=-1 to x=2 using three rectangles and eight right end points. Then improve your answer by using six rectangles. Sketch the curve and the approximating rectangles.

Question

xixi743 · Answer

@Astrophysics

xixi743 · Answer

So this is band new material. I'd really appreciate any help I can get. I've already drawn the curve and I know the range is [-1,2]

xixi743 · Answer

I would be cool if somone could help me set up the equation to solve this using the right end points.

triciaal · Answer

off to a good start
domain is the set of x values
the range is the output values   lowest to highest 
do you want to show what you have?

triciaal · Answer

@Directrix can you continue please I have to leave

triciaal · Answer

@freckles please   need to go

xixi743 · Answer

Um so I just started with finding what delta x was and that is one because there's 3 units that we move along x and 3 rectangles being used for approximation
So I've written f(0)delta x + f(1) delta x+ f(2) delta x 
and so far that's all I have.

xixi743 · Answer

@triciaal just go it's no big deal. I'm watching a khan academy video, maybe that will help me out

xixi743 · Answer

Okay I got 8 using the 3 rectangles. I think I have the hang of this on my own. I'm closing this question.