Findind an Exponential Function

f( x ) = ba^x

Guest:

Given (0,2) and (1,5).

f( 0 ) = 2
f( 1 ) = 5

2 = b*a^0
5 = b*a^1

[input]solve( 2 = b*a^0, 5 = b*a^1 )[/input]
b = 2
a = 2.5

test:
f( 0 ) = 2 * 2.5^0 = 2 (check)
f( 1 ) = 2 * 2.5^1 = 5 (check)

thank you