A complex number is always written in form "a+ib" , where "a" is called real part and "b" is called imaginary part. For example we have \(2+3i\), then "2" is its real part and "3" is its imaginary part. Now we are giving you some practice questions try to solve them , answers are given at the end of the page
1) . Find the real part in following complex numbers.
\(a\)). \(2+ib\)
\(b\)). \(9i+2\)
\(c\)). \(8i\)
\(d\)). \(8i+ai\)
\(e\)). \(10000i+1\)
\(f\)). \(\displaystyle\frac{8}{2}+1\)
\(g\)). \(ai+1+b\)
2). Find the Imaginary part in following complex numbers.
\(a\)). \(0+4i\)
\(b\)). \(2\)
\(c\)). \(i\)
\(d\)). \(0+\displaystyle\frac{1}{2}i \)
\(e\)). \(\displaystyle \frac{1}{9}+\frac{9}{3}i\)
\(f\)). \(a+bi\)
\(g\)). \(0\)
Answers : 1)
a) 2 b) 2 c) 0 d) 0 e) 1
f) 5 or \(\displaystyle\frac{8}{2}+1\) g) 1+b
Answers : 2)
a) 4 b) 0 c) 1 d) \(\displaystyle\frac{1}{2}\) e) 3 or \(\frac{9}{3}\)
f) b g) 0
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