i was wondering if i'm using the right approach for this(adsbygoogle = window.adsbygoogle || []).push({});

the question reads

is the following statement true for all x and y : 'If x<y then x^2<y^2'

then it follows by asking about 'if x^2<y^2'

i am currently using case analysis to do this

by considering whether x and y are positive or negative

is there any other more efficient way to do this ?

what axiom should i use in this case ? because squaring both sides instead of multiplying by a common factor

thanks

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# Homework Help: Inequalities 2

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