How to calculate X^n using normal calculator

Kandarp Dudhoria (CA in Practise) (121 Points)

01 November 2010  

 

 Useful for SFM MAFA and other subjects

Hey Friends ever wondered how to find out the answer for xn (base "x" to the power of "n")

For e.g. did crack down your head to know the answer for something like this

2.718280.06 (xn) using a calculator allowed in the CA/CWA/CS examination hall

Let me tell you the way out

 

 

Step i) put down the base (2.71828) in your calculator and now press the √ (Square root) key 12 times.

(in our e.g. you will get 1.00024417026)

Step ii) now subtract 1 from the number as per step (ii).

(In our example 1.00024417026 -1=0.00024417026)

 

Step iii) now multiply the number as per step (ii) with the power 'n'(in our e.g. 0.06)

 

(0.00024417026 X 0.06 = 0.00001465021)

 

Step iv) now add back one to the number as per step (iii).

(0.00001465021+1=1.00001465021)

 

Step v) now the final step press "X=" keys('Multiplication' and 'Equal To' keys one after the other) 12 times and that’s the answer.

 

(1.00001465021 X= X= X= X= X= X= X= X= X= X= X= X=  you will get 1.06184 and that's the answer)

 

Practice it a few times and thats it; it is surely gonna save some of your time in the examination hall (that is wasted in searching for the answer in tables)

   

For any clarification pls post down your query...