MCQ
If $\left[\frac{1-i}{1+i}\right]^{100}=a+i b$, then :
- A$a=2, b=-1$
- B$a=1, b=0$
- ✓$a=0, b=1$
- D$a=-1, b=2$
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The domain of the function f defined by $\text{f(x)}=\sqrt{4-\text{x}}+\frac{1}{\sqrt{\text{x}^2-1}}$ is equal to.
$(–\infty, –1) \cup (1, 4]$
$(–\infty, –1] \cup (1, 4]$
$(–\infty, –1) \cup [1, 4]$
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