yo8uchemarchasiasof yo8uchemarchasiasof

26-11-2016
Mathematics

contestada

Fill in the missing values to make the equations true.
log_4(7)+log_4(5)=log_4(?)
log_8(11)-log_8(?)=log_8(11/5)
2log_9(3)=log_9(?)

Respuesta :

Nirina7 Nirina7

29-11-2016

the main formulas of log are:
log A + logB =log A*B
log A - logB =log A/B
log A ^p= p logA

so
log_4(7)+log_4(5)=log_4(7*5)=log_4(35)
log_8(11)-log_8(5)=log_8(11/5)
2log_9(3)=log_9(3)²

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