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# CAN WE SAY THIS IS A PROOF.....

Is this correct...????????

Note by Trishit Chandra
1 year, 10 months ago

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You just played around with fire.

You made some foul moves. One example is that you replaced $$1$$ to $$i^4$$then took square root of it. Reason is this:

Clearly $$\sqrt{1} = 1$$. Now since $$i^4 =1$$, we have $$\sqrt{1} = \sqrt{i^4} = i^2 = -1$$. So we have $$1=-1$$.

We know $$1$$ is not supposed to be equal to $$-1$$.

Also $$\sqrt{n^2}$$ is actually equal to $$|n|$$, not $$\pm n$$, since $$n^2\ge0$$ for all real numbers. · 1 year, 10 months ago

|n|=+-(sqrt(n^2))

I thnk you are partially right. · 1 year, 10 months ago