09-02-2021
Mathematics

contestada

10. If log10x = 1 + a and log10y = 1 – a, show that xy = 100.
How?

Respuesta :

steppe04 steppe04

09-02-2021

Step-by-step explanation:

log x = 1 + a

a = log x - 1

log y = 1 - a

a = 1 - log y

So

log x - 1 = 1 - log y

log x + log y = 2

log (xy) = 2

xy = 100

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