Posted by **CMM** on Thursday, January 13, 2011 at 8:37pm.

a)If f(x)= x/(x+2), 1 less than or equal to x less than or equal to 4, find the left and right sums for n= 10, 30, and 50.

b)Illustrate by graphing the rectangles in part a.

c)Show that the exact area under f lies between 1.603 and 1.624.

So this is all I know and I'm not sure if it's correct. Help please.

The x-axis of the graph will start at 1 and end at 4, so I will have 4 equal rectangles each with a width of 0.75.

So,

R4= 0.75*(1.75)^2 + 0.75*(2.5)^2 + 0.75*(3.25)^2 + 0.75*(4)^2 = 26.90625

AND,

L4= 0.75*(1)^2 + 0.75*(1.75)^2 + 0.75*(2.5)^2 + 0.75*(3.25)^2 = 15.65625

What is the "n" used for? Where are they getting the 1.603 and 1.624?

## Answer This Question

## Related Questions

- ap stats - Continuous Random Variable, I Let X be a random number between 0 and ...
- stats - Continuous Random Variable, I Let X be a random number between 0 and 1 ...
- i lied. very quick calc problem. - f(x) = abs(sin(x)), -pi less than or equal to...
- calculus - Consider the function f(x)=65x−cos(x)+2 on the interval 0 less ...
- calc ii - if we know that 12 is less than or equal to f(x) which is less than or...
- Statistics - Let Y be a random number between 0 and 1 generated by an idealized ...
- Math - I'm having a hard time with graphing this problem. Could someone please ...
- math - The function f(x)is defined as f(x)={-2x+3: if -2 less than or equal to &...
- Calculus - Two particles move along the x -axis. For 0 is less than or equal to ...
- Calculus - Two particles move along the x -axis. For 0 is less than or equal to ...

More Related Questions