Question

Prove that 1/root 11 is an irrational number

Answer 1

◆. Let's 1/√11 be a rational no.

so, 1/√11 = a/b

√11 = b/a

here , b/a is a rational no..

so , √11 should be a rational no..

a , contradict has arisen. that the √11 is an irrational no.

our assumption is wrong

so, 1/√11 is an international no.

Answer 2

Answer:

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$\frac{1}{ \sqrt{11} } = \frac{a}{b} \\ b = \sqrt{11a} \\ so \: b \: is \: rational \: and \: \sqrt{11} is \: not$

So we can say that above no is irrational .......

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