A number theory problem by Bryan Lee Shi Yang

Number Theory Level 1

Find (y^x)(y^-x). The answer will always be......


The answer is 1.

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Bryan Lee Shi Yang by Bryan Lee Shi Yang , 17, Malaysia

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1 solution

Aryan Gaikwad
Feb 20, 2015

= x y × x − y = x y − y = x 0 = 1 =\quad { x }^{ y }\times { x }^{ -y }\\ =\quad x^{ y-y }\\ ={ \quad x }^{ 0 }\quad =\quad 1

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