Question

Proove that 1/√2is irrational.​

Answer 1

Answer:

Let take that 1/√2 is a rational number.

So we can write this number as

1/√2 = a/b

Here a and b are two co prime number and b is not equal to 0

Multiply by √2 both sides we get

1 = (a√2)/b

Now multiply by b

b = a√2

divide by a we get

b/a = √2

Here a and b are integer so b/a is a rational number so √2 should be a rational number But √2 is a irrational number so it is contradict

Hence result is 1/√2 is a irrational number

Answer 2

Answer:

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