Exponential Function

17900 = ab^13 -----(1)
500 = ab^3 ---------(2)

(1)/(2)

179/5 = b^10
b = (35.8)^0.1

a*35.8^(0.1*3) = 500
a = 500/35.8^0.3

So a = approximately 170.925
b = approximately 1.430