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Note by Hrishikesh Pingle
2 years, 2 months ago

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Hrishikesh pingle ur 2ndstep is wrong coz u r cancelling zero with another Sukesh S · 1 year, 4 months ago

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Sorry its not firat . Its first Mukul Sharma · 2 years, 2 months ago

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In the firat step.you considered a= b and in the second last step there are terms a-b on both sides thus lhs = rhs = 0 There is nothing like 2=1. Mukul Sharma · 2 years, 2 months ago

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in second step u have aded 'a' on both sides.then why can't u subtract 'b' from both sides,which implies a-b=0.so u can't cancel a-b with a-b. GOT IT? Pranshul Srivastav · 2 years, 2 months ago

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you second last step is incorrect coz you are cancelling a zero with another zero Pranshul Srivastav · 2 years, 2 months ago

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@Pranshul Srivastav we haven't substituted 'a' for 'b' or 'b' for 'a' so we cant say it is a zero Hrishikesh Pingle · 2 years, 2 months ago

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@Hrishikesh Pingle Your First step says \(a=b\) so you are actually canceling zero. Krishna Sharma · 2 years, 2 months ago

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@Krishna Sharma but.. a-b becomes zero when we substitute either 'a' for 'b' or 'b' for 'a' without substituting we can cancel a-b... Hrishikesh Pingle · 2 years, 2 months ago

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@Hrishikesh Pingle No.

\(a= b\)

Take \(b\) on LHS

\(a-b = 0\). Krishna Sharma · 2 years, 2 months ago

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@Krishna Sharma but why take b on LHS ??? Hrishikesh Pingle · 2 years, 2 months ago

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@Hrishikesh Pingle Just to explain you that it is zero without substitution. Krishna Sharma · 2 years, 2 months ago

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@Krishna Sharma is it necessary to solve a-b , i mean without solving we can cancel it Hrishikesh Pingle · 2 years, 2 months ago

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@Hrishikesh Pingle Look, if its value is zero then it is zero one cannot argue that writing it into other form willchange its value

For example let \(h = 0\)

\(\dfrac{h}{h} =? \)

You cannot say that it is just "h" so cancel it, you cannot. Because \(\frac{0}{0}\) don't have a specific value. Krishna Sharma · 2 years, 2 months ago

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i don't think that it is necessary to substitute values,every time... Hrishikesh Pingle · 2 years, 2 months ago

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