Curve Fitting || Fitting of Exponential Curve || Y =ab^x 

Here I took to the base 10 meaning thereby log however you may formulate it using ln

​@@appliedmathematics3018 how you calculated value of logy in calci

@@yashrathod1728, it’s there in calci. If you are using Scientific and non programmable then log can be used directly and “ln” can be used with Shift+log

@@appliedmathematics3018 so what you're saying is that if i use ln then the equation would still bring us to the same answer?

1. Easiest way take the value of A from one equation and put it in another. 2. You can use matrix method. 3. In programmable calculators there is a facility of solving simultaneous equation directly.

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I took log as it is base 10. However the same can be done with ln also.