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 Author Comment/Response Greg 03/24/12 12:12pm When doing calculations, I sometimes run into the situation where being real and imaginary greatly affects the answer. For example, when I do integration sometimes, I end up with the result: [numerical/symbolical answer], Assuming "a" is real, assuming Re[b]>0, etc In extreme cases, this sometimes turns what should be 1 to 2 second calculations into being minutes long. And if I want to find the complex conjugate of some expressiong (lets say "a*b*i"). It will come up as -i * Conjugate[ab]. But a and b are reals, so their conjugate is just the original value. Is there a way to explicitly tell Mathematica to treat certain variables as imaginary or real? URL: ,

 Subject (listing for 'Is there a way to declare a number to be Re or ...') Author Date Posted Is there a way to declare a number to be Re or ... Greg 03/24/12 12:12pm Re: Is there a way to declare a number to be Re... jf 03/24/12 4:36pm
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