Integrating ExponentialsDate: 27 May 1995 21:48:26 -0400 From: Chris Portman Subject: Integrating 5^x dx. What is the integral of 5^x dx? Date: 28 May 1995 17:17:49 -0400 From: Dr. Sydney Subject: Integrating 5^x dx. Hello, Chris! To do this integral, you must use a property of the number, e: e^ln y = y. For this problem, substitue 5^x for y, so you have the equation: 5^x = e^(ln 5^x) But ln 5^x = xln5, so you have: 5^x = e^(xln5) Now the integral of 5^x dx is the same as the integral of e^(xln5). Can you compute that? If you need more help, feel free to write back! --Sydney, "dr.math" |
Search the Dr. Math Library: |
[Privacy Policy] [Terms of Use]
Ask Dr. Math^{TM}
© 1994- The Math Forum at NCTM. All rights reserved.
http://mathforum.org/dr.math/