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Choosing one answer from 3 in Solve

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Behrang Tavousi
Behrang Tavousi 2015-9-19
评论： Behrang Tavousi 2015-9-19
i solved a eq with command solve() and get answer -1.35-4.59i , -0.136-4.59i , 1.18+9.18e-41i
i need just real part of positive answer,1.18 from these answers. i want to store this answer in Array, but i have get error because there are 3 answers
thanks

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James Tursa
James Tursa 2015-9-19
To get the real part of the 3rd element, e.g.,
>> x = [-1.35-4.59i , -0.136-4.59i , 1.18+9.18e-41i]
x =
-1.3500 - 4.5900i -0.1360 - 4.5900i 1.1800 + 0.0000i
>> real(x(3))
ans =
1.1800

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