InterviewSolution
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InterviewSolution
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If atthen provedatte2: Abted-abt i de 5782 |
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Answer» a/b=c/d=k(say); a+bk| c+dk; L.h.s a^2+c^2=ab+CD a^2+b^2/ab+ CD ( bk)^2+(ak)^2/b^2k+d^2k = k^2( a^2+ b^2)/k( a^2+ b^2)=k^2/ k=k, l h s closed. Rhs . ab×cd=b^2+d^2= k(b^2+d^2)/( b^2+ d^2)=K |
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