If \[{{(x+iy)}^{1/3}}=a+ib,\]then \[\frac{x}{a}+\frac{y}{b}\]is equal to [IT 1982; Karnataka CET 2000]

If \[{{(x+iy)}^{1/3}}=a+ib,\]then \[\frac{x}{a}+\frac{y}{b}\]is equal

1.	If \[{{(x+iy)}^{1/3}}=a+ib,\]then \[\frac{x}{a}+\frac{y}{b}\]is equal to [IT 1982; Karnataka CET 2000]
A.	\[4({{a}^{2}}+{{b}^{2}})\]
B.	\[4({{a}^{2}}-{{b}^{2}})\]
C.	\[4({{b}^{2}}-{{a}^{2}})\]
D.	None of these
Answer» C. \[4({{b}^{2}}-{{a}^{2}})\]

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If \[{{(x+iy)}^{1/3}}=a+ib,\]then \[\frac{x}{a}+\frac{y}{b}\]is equal to [IT 1982; Karnataka CET 2000]

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