If y be the reciprocal of rational number x, then reciprocal of y^2 will be??
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If y be the reciprocal of rational number x, then reciprocal of y^2 will be??
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answer : option (a) x
explanation : given, y be the reciprocal of rational number x.
mathematically, y = 1/x
from cross multiplication,
or, y × x = 1
dividing by y both sides,
or, y × x/y = 1/y
or, x = 1/y .....(1)
hence, it is clear that x is reciprocal of y.
now question want to find reciprocal of y.
from equation (1), we get x is reciprocal of y.
hence, option (a) is correct.
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Step-by-step explanation:
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