Ifx=log, 243, y=log, 64, then x 1-2 ſy is
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Step-by-step explanation:
In the first you do not need the calculator.
Consider:
log
4
(
64
)
=
x
use the definition of log...what is the number
x
you need to raise
x
to get
64
?
or:
4
x
=
64
you can see that is
3
in fact
4
3
=
64
so
x
=
3
Also the second do not require the calculator in fact you know that
3
5
=
243
so you can write:
log
3
(
3
5
)
=
2
x
+
1
use again the definition of log:
3
5
=
3
2
x
+
1
so that:
5
=
2
x
+
1
x
=
4
2
=
2
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