My Math Forum  

Go Back   My Math Forum > College Math Forum > Calculus

Calculus Calculus Math Forum

LinkBack Thread Tools Display Modes
October 3rd, 2018, 06:31 PM   #1
Joined: Oct 2018
From: Australia

Posts: 4
Thanks: 0

Is $\int\frac{14x^6+2x}{2x^7+x^2}\,\mathrm dx=\ln\left(2x^7+x^2\right) + C$ false?

Is $\displaystyle \int\frac{14x^6+2x}{2x^7+x^2}\,\mathrm dx=\ln\left(2x^7+x^2\right) + C$ false?

Last edited by skipjack; October 3rd, 2018 at 07:27 PM.
maths noob is offline  
October 3rd, 2018, 07:37 PM   #2
Global Moderator
Joined: Dec 2006

Posts: 20,965
Thanks: 2214

If $x$ is real, I would usually give $\displaystyle \int\!\frac{14x^6+2x}{2x^7+x^2}\,\mathrm dx=\ln\left|2x^7+x^2\right| + C$. Why did you ask?
skipjack is offline  
October 4th, 2018, 12:04 PM   #3
Senior Member
Joined: Sep 2016
From: USA

Posts: 642
Thanks: 406

Math Focus: Dynamical systems, analytic function theory, numerics
Originally Posted by maths noob View Post
Is $\displaystyle \int\frac{14x^6+2x}{2x^7+x^2}\,\mathrm dx=\ln\left(2x^7+x^2\right) + C$ false?
Why ask us? Just take the derivative of the proposed solution and check.
SDK is offline  

  My Math Forum > College Math Forum > Calculus

$intfrac14x6, 2x2x7, dxlnleft2x7, false, mathrm, x2right

Thread Tools
Display Modes

Similar Threads
Thread Thread Starter Forum Replies Last Post
Laurent Series of $f(z) = \frac{1}{z} ghostwin Complex Analysis 2 November 16th, 2017 04:42 AM
Simplify [MATH]\frac{1}{m-1}+\frac{9}{2m+3}-\frac{8}{m+4}[/MATH] Chikis Algebra 6 July 15th, 2014 06:16 PM
int\frac{1}{x(1-ax}dx cait Calculus 4 July 12th, 2014 03:10 PM
In what situation frac of limits equals to limit of frac? stainburg Calculus 17 November 24th, 2013 12:14 AM
frac(e^n) Yegreg Number Theory 1 December 3rd, 2007 07:33 PM

Copyright © 2019 My Math Forum. All rights reserved.