testing header
Math Goodies is a free math help portal for students, teachers, and parents.
Free Math
Interactive Math Goodies Software

Buy Math Goodies Software
testing left nav
Math Forums @ Math Goodies
Math Forums @ Math Goodies
Home | Profile | Active Topics | Members | Search | FAQ
Save Password
Forgot your Password?

 All Forums
 Homework Help Forums
 Pre-Calculus and Calculus
 Need help on these problems!
 New Topic  Reply to Topic
 Printer Friendly
Author Previous Topic Topic Next Topic  

New Member

1 Posts

Posted - 02/11/2012 :  23:23:22  Show Profile  Reply with Quote
I really cannot start to figure these problems out!

If ∫ (x2-2x+2) dx [0,6] is approximated by three inscribed rectangles of equal width on the x-axis, then what is the approximation?
Let f(t)= 1/t for t>0. For what value of t is f(t) equal to the average rate of change of f on the closed interval [a,b]?
(A) -√(ab) (B) √(ab) (C) -1/√(ab) (D) 1/√(ab) (E) √((1/2)(1/b-1/a))

What is: lim (x->b) (b-x)/(√(x) - √(b))

t: 1 3 6 10 15
f(t) 2 3 4 2 -1

The function f is continuous on the closed interval [1,15] and has the values shown on the table above. Let g(x) = ∫f(t) dt [1,x]. Using the intervals [1,3], [3,6], [6,10], [10,15], what is the approximation of g(15) g(1) obtained from a left Riemann Sum?
Go to Top of Page


3059 Posts

Posted - 02/13/2012 :  08:57:07  Show Profile  Reply with Quote
Please read the posting rules and show some work.
Go to Top of Page
  Previous Topic Topic Next Topic  
 New Topic  Reply to Topic
 Printer Friendly
Jump To:
Math Forums @ Math Goodies © 2000-2004 Snitz Communications Go To Top Of Page
This page was generated in 0.04 seconds. Snitz Forums 2000
testing footer
About Us | Contact Us | Advertise with Us | Facebook | Blog | Recommend This Page

Copyright © 1998-2014 Mrs. Glosser's Math Goodies. All Rights Reserved.

A Hotchalk/Glam Partner Site - Last Modified 18 Dec 2014