Finding area under a curve

[Dono Mills]

I have looked at a lot of tutorials and i cannot seem to figure this out. I do not know what to do, any advice would be helpful.

 

[lev888]

Try this:

Let us know which part is not clear.

 

[Steven G]

Please read the forum's guidelines where it will say that we expect you to solve your own problems with our help. It is hard to help you if you fail to tell us where you are stuck and/or show us the work you have done so far. So please read the guidelines, follow them and then post back.

You should partition the x-axis from x=2 to x=6 using delta x = (6-2)/n = 4/n where n is the number of rectangles.

So the partition of x will be 2 , 2+1*delta x, 2 + 2*delta x, 2 + 3*delta x , ..., 6
Those are the locations for each base which has a length of delta x =4/n. Now for each base find a height for the rectangle.

View a good video from here

 

[HallsofIvy]

f(x) apparently is given as f(x)= 5x+ 2. So what is that curve for x> 0? The problem is to find the "area under the given curve". What is the "given curve"? It's obviously NOT y= f(x)!