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Re: simple antiderivative

  • To: mathgroup at smc.vnet.net
  • Subject: [mg68130] Re: [mg68104] simple antiderivative
  • From: Sseziwa Mukasa <mukasa at jeol.com>
  • Date: Tue, 25 Jul 2006 04:01:30 -0400 (EDT)
  • References: <200607240455.AAA25321@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

On Jul 24, 2006, at 12:55 AM, T Harris wrote:

> Hello, I am a beginner with Mathematica and I am wrapping up  
> Calculus 1
> right now.  Here is my question.
>
> I am doing antiderivatives and tried to check one I did and can't  
> get my
> handworked answer which is correct by the solution manual to match
> Mathematica's
> answer.  I copied and pasted everything here so it looks weird  
> until you
> paste it back in notebook.
>
> Here is my input copied and pasted;
>
> \!\(Integrate[8 x - 3\ \(Sec\^2\)[x], x]\)
>
> My output is :
>
> \!\(\[Integral]\((8\ x - 3\ \(Sec\^2\)[x])\) \[DifferentialD]x\)
>
> Why don't I get the answer below as I do when I do it by hand?  The
> antiderivative of Sec^2 is Tan.  I am puzzled by the output  
> mathematica
> gives.

You put the exponent in the wrong place, you want Sec[x]^2 not (Sec^2) 
[x], try

Integrate[8x - 3 Sec[x]^2, x]

Regards,

Ssezi


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