# solving logs with calculator

• Nov 20th 2009, 05:07 PM
VNVeteran
solving logs with calculator
how do i plug in f(x)=log2 x where x=32
• Nov 20th 2009, 09:26 PM
Rapha
Quote:

Originally Posted by VNVeteran
how do i plug in f(x)=log2 x where x=32

What kind of calculator do you have?
If the $\displaystyle log_2$-key is missing use ln(x) divided by ln(2) instead.

Because $\displaystyle log_2 x =\frac{ln(x)}{ln(2)}$
• Nov 20th 2009, 09:51 PM
mr fantastic
Quote:

Originally Posted by VNVeteran
how do i plug in f(x)=log2 x where x=32

Are you meant to use a calculator? Perhaps you're meant to notice that 32 = 2^5.
• Nov 21st 2009, 04:04 PM
VNVeteran
Quote:

Originally Posted by Rapha
What kind of calculator do you have?
If the $\displaystyle log_2$-key is missing use ln(x) divided by ln(2) instead.

Because $\displaystyle log_2 x =\frac{ln(x)}{ln(2)}$

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