Register to reply

Definite Integral [help]

by mckallin
Tags: definite, integral
Share this thread:
Jan23-08, 02:56 AM
P: 15
hello, can anyone help me how to complete the following definite integral? Thanks!!
∫ (x^2)*sqrt(7 x + 9) dx (From 0 to 1)
Phys.Org News Partner Science news on
Experts defend operational earthquake forecasting, counter critiques
EU urged to convert TV frequencies to mobile broadband
Sierra Nevada freshwater runoff could drop 26 percent by 2100
Rainbow Child
Jan23-08, 03:23 AM
P: 365
Try the substitution

Jan23-08, 11:19 AM
P: 15
sorry, I still can't figure out it, can you give me some more detail? thanks a lot .

Jan23-08, 11:23 AM
Sci Advisor
PF Gold
P: 39,569
Definite Integral [help]

If [itex]y= \sqrt{7x+ 9}[/itex], what is dx (in terms of dy and y)? What is x in terms of y? (So you can substitute for that x2.)
Jan23-08, 11:59 AM
P: 15
I got it, thanks for help!! ^-^

Register to reply

Related Discussions
Definite Integral Calculus & Beyond Homework 1
Please HeLp with definite integral Introductory Physics Homework 4
Definite integral Calculus & Beyond Homework 4
Definite Integral Calculus 1
Definite Integral Calculus 3