GROWTHX and GROWTHY
These functions can be used to generate the x and y values required by Microsoft Excel's GROWTH function.
GROWTHX
Returns the value of y, where y is the result of raising a value to a specified power and then multiplying by a second value.
Syntax
				=GROWTHX(exponent, base, constant)
			
Example
				=GROWTHX(2,3,4) returns 36. 
That is, 3 raised to the power of 2, multiplied by 4: 
		
	 (3^2)=9
9x4=36
y=36 GROWTHY
GROWTHY is the reverse of GROWTHX. That is, it returns the power used in the calculation of y.
Syntax
				=GROWTHY(y, base, constant)
			
Example
				=GROWTHY(36,3,4) returns 2. 
That is, 3 raised to the power of y, multiplied by 4=36: 
		
	 (3^y)=9
9x4=36
y=2