1 | ###
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2 | Returns the real part of complex z
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3 |
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4 | z real(z)
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5 | - -------
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6 |
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7 | a + i b a
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8 |
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9 | exp(i a) cos(a)
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10 | ###
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11 |
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12 |
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13 |
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14 | Eval_real = ->
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15 | push(cadr(p1))
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16 | Eval()
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17 | real()
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18 |
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19 | real = ->
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20 | save()
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21 | rect()
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22 | p1 = pop()
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23 | push(p1)
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24 | push(p1)
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25 | conjugate()
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26 | add()
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27 | push_integer(2)
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28 | divide()
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29 | restore()
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30 |
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