PC 3.1 Exponents and logs (Basics review)

What is the base?  $\ln\ x\ =\ 2$  

What is the base?  $\log\ 50\ =\ w$  

What is the base?  $\log_5\ b\ =\ 3$  

What is the exponent or power?  $\log_5\ b\ =\ 3$  

What is the exponent or power?  $\log\ 50\ =\ w$  

What is the exponent or power?  $\ln\ x\ =\ 2$  

 $3^4=81$  Write as a logarithm:

•  $\log_381=4$  

•  $\ln81=3$  

•  $\log_34=81$  

•  $\log_481=3$  

•  $\log81=3$  

 $a^b=c$  Write as a logarithm:

•  $\log_cb=a$  

•  $\log_cb=a$  

•  $\log_bc=a$  

•  $\log_ac=b$  

•  $\log_ab=c$  

Write as an exponential equation.  $\log_xy=z$  

•  $x^y=z$  

•  $y^x=z$  

•  $x^z=y$  

•  $y^z=x$  

•  $z^x=y$  

Which one is true?

• $\ln a+\ln b=\ln\left(a+b\right)$

• $\ln a+\ln b=\ln\left(ab\right)$

• $\ln a+\ln b=\ln\left(a-b\right)$

• $\ln a+\ln b=\ln\left(\frac{a}{b}\right)$