Question

do i have to give a compartmental paper for taking pcb after taking basic maths in 10 in cbse schools if yes when do i have to give the exam??​

Answer 1

Answer:

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Answer 2

Answer:

Let the multiplicative inverse of 5−i be a+bi

Therefore we have (5−i)(a+bi)=1

⇒5a+b+i(5b−a)=1

⇒5a+b=1 and 5b−a=0

⇒a=5b

Substitute this in 5a+b=1, we get

b=

26

1

and a=

16

5

Therefore, multiplicative inverse is

26

(5+i)

.