# How do you find formula for the exponential function in the form of f(x)= Ca^x given f(0)=3 and f(1)=15?

##### 3 Answers

Jul 22, 2018

#### Explanation:

We have:

So:

This gives:

Jul 22, 2018

#### Explanation:

#"substitute "(0,3)" into the equation"#

#Ca^0=3rArrC=3#

#"substitute "(1,15)" into the equation"#

#3a^1=15rArra=15/3=5#

#f(x)=3(5)^x#

Jul 22, 2018

#### Explanation:

Let,