CBSE Class 10 Answered
How can we say that the method to prove root 2 is irrational is relevent????
Asked by sukritin | 06 Apr, 2009, 08:58: PM
Expert Answer
2 is not an irrational number.
The method given in NCERT is relevant.
Since, According to the theorem 1.3,
Let p be a prime number. If p divides a2, then p divides a, where a is a positive integer.
But here in this case you are using this theorem for 4, which is a composite number. Therefore, the theorem is not applicable.
Answered by | 07 Apr, 2009, 04:36: PM
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