Home Forums Chat Forum Integration help

Viewing 4 posts - 1 through 4 (of 4 total)
  • Integration help
  • Waderider
    Free Member

    Any mathematicians on-line today? I need assistance with a question, involving integration using substitution. I can do every example I have except this one. I keep on looking back to the rules of logarithms as I think that is a way forward but I can’t get it.

    So, can anyone tell me the steps to the resolution of integral 3^x dx? Unusually Wolfram Alpha doesn’t help. I know the answer is 1/ln3.3^x+c.

    The integration tables that I am meant to be using do not deal with this example, so I need to know how to rearrange the integrand. This is what I want help with!

    Thanks, in anticipation.

    RealMan
    Free Member

    Think of it like this

    3^x

    e^(xln3)

    then you can integrate

    1/ln3 * 3^x + c

    Sorry if it doesn’t make much sense, I just woke up.

    Waderider
    Free Member

    Spot on realman, easy-as when you know how. Thanks.

    RealMan
    Free Member

    Can I go back to bed then..

Viewing 4 posts - 1 through 4 (of 4 total)

The topic ‘Integration help’ is closed to new replies.