hello, can someone please show me how the roots of z tan z = k , where k > 0 are real is solved.

what i have done; z tan z =

by Euler equations

would appreciate some help solving this thanks guys

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- April 10th 2013, 01:16 AMsigma1roots of z tan z
hello, can someone please show me how the roots of z tan z = k , where k > 0 are real is solved.

what i have done; z tan z =

by Euler equations

would appreciate some help solving this thanks guys - April 10th 2013, 05:56 AMHallsofIvyRe: roots of z tan z
The first thing I would do is get the denominator real by multiplying numerator and denominator by the conjugate, -i (note that e

^{iz}+ e[sup]-iz[/itex]**is**a real number because it is equal to its conjugate).