Mathematica question

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  • Thread starter shehry1
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Main Question or Discussion Point

A beginner to Mathematica's question:

I try to make the following integration in mathematica 6 and I get back the same expression with the integration symbol next to it. Why?
Integrate[exp[-k*z]*BesselJ[0, k*a]* BesselJ[1, k*a], {k, 0, Infinity}]

Integrate[Sin[k], {k, 0, 1}] however gives the correct answer.

Not that it matters, the equation comes in one of Jackson's problems and I have seen solutions on the net that seem to make a jump to the solution saying 'using Mathematica...'
 

Answers and Replies

  • #2
422
1
A beginner to Mathematica's question:

I try to make the following integration in mathematica 6 and I get back the same expression with the integration symbol next to it. Why?
Integrate[exp[-k*z]*BesselJ[0, k*a]* BesselJ[1, k*a], {k, 0, Infinity}]

Integrate[Sin[k], {k, 0, 1}] however gives the correct answer.

Not that it matters, the equation comes in one of Jackson's problems and I have seen solutions on the net that seem to make a jump to the solution saying 'using Mathematica...'
Try correcting the expression. In particular, the Mathematica command for [itex]e^x[/itex] is

Code:
Exp[x]
and not

Code:
exp[x]
 
  • #3
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eureka
 

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