function not evaluating question tia sal2

Discussion in 'Mathematica' started by ratullochjk2, Apr 21, 2008.

  1. ratullochjk2

    ratullochjk2 Guest

    function not evaluating question tia sal2

    Greetings All

    I trying to evaluate this function to a numerical value but it doesn;t
    seem to work I replace the expression with t sin t and it works what
    am I doing wrong?

    In[240]:= f = Function[{t}, 0.680232 Cos 6.28319 [t]]
    Out[240]:= Function[{t}, 0.680232 Cos 6.28319[t]]


    In[241]:= Evaluate [f[2.5]]
    Out[241]:= 0.680232 Cos 6.28319[2.5]

    Why am I not getting a numerical value? tia sal2
     
    ratullochjk2, Apr 21, 2008
    #1
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  2. It seems you have misplaced a square bracket. (Note that Evaluate is not
    required here.)

    In[1]:= f = Function[{t}, 0.680232 Cos[6.28319 t]];
    f[2.5]

    Out[2]= -0.680232

    Regards,
    -- Jean-Marc
     
    Jean-Marc Gulliet, Apr 21, 2008
    #2
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  3. Hi,

    you should try to read the manual and learn to
    set the brackets on the right positions:

    f = Function[{t}, 0.680232 Cos[ 6.28319 t]]

    Regards
    Jens
     
    Jens-Peer Kuska, Apr 21, 2008
    #3
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