5. Considerando a seguinte lei ∫ ( x ) = x² - 2x + 5, calcule:
a) ∫ ( 2i + 1 )
b) ∫ ( -i )
c) ∫ ( 1 - 2i )
Me expliquem..
a) ∫ ( 2i + 1 )
b) ∫ ( -i )
c) ∫ ( 1 - 2i )
Me expliquem..
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Bom dia Popeyei = unidade imaginaria
f(x) = x² - 2x + 5
a) f(2i + 1)
temos
x = 2i + 1
x² = (2i + 1)² = -4 + 4i + 1 = -3 + 4i
f(2i + 1) = -3 + 4i - 4i - 2 + 5
f(2i + 1) = 0
b) f(-i)
x² = (-i)² = -1
f(-i) = -1 - 2i + 5 = 4 - 2i
c) f(1 - 2i)
x² = (1 - 2i)² = 1 - 4i - 4 = -3 - 4i
f(1 - 2i) = -3 - 4i - 2 + 4i + 5 = 0