How to find x y and x th root of y using normal calculator?

Others 12623 views 11 replies

Guest

How to find X ^y and X ^th root of Y using normal calculator?

If during exam, you have to find X ^y or X ^th root of Y, you can use normal calculator for this.

Steps to be followed:

· Type X in your calculator

· Hit √ button 15 times

· Deduct 1

· Multiply Y

· Add 1

· Hit (X followed by = ) button 15 times

· You get the Answer

For example:

⁵√59049 (5^th root of 59049)... and 3 ^0.9

Find 3 ^0.9	Display	Find⁵√59049 is also 59049 ^1/5	Display
Type 3 in your calculator	3	Type 59049 in your calculator	59049
Hit √ button 15 times	1.00003352754	Hit √ button 15 times	1.00033532606
Deduct 1	0.00003352754	Deduct 1	0.00033532606
Multiply 0.9	0.00003017478	Divide 5 (equivalent to Mutiply 1/5)	0.00006706521
Add 1	1.00003017478	Add 1	1.00006706521
Hit (X followed by = )button 15 times	2.6878784016	Hit (X followed by = )button 15 times	9.00264954243
You get the Answer	2.6878784016	You get the Answer	9.00000

Remember Don’t press any other button other than above in between these operations..

This technique was learned from one of my teachers…

He told to share among others too..

So sharing this…

Enjoy….

Replies (11)

Abhay

Finance

43 Points Joined June 2011

The second last step is slightly confusing, what do you mean by Hit (X followed by = )button 15 times?

Guest

Originally posted by : Abhay
	The second last step is slightly confusing, what do you mean by Hit (X followed by = )button 15 times?

Hit (X) mutiplication button and then (=) equal button (Repeat this process 15 times)

Abhay

Finance

43 Points Joined June 2011

Originally posted by : Jiju Oommen
	Originally posted by : Abhay The second last step is slightly confusing, what do you mean by Hit (X followed by = )button 15 times? Hit (X) mutiplication button and then (=) equal button (Repeat this process 15 times)

Okays.. hit multiply button followed by =.. excellent it works now.. thanks for sharing

Aman

Finance Professional

604 Points Joined October 2012

i am too confused about that step is it sign of multiply???

Karthik

student

147 Points Joined August 2009

yeah Multiply button followed by equal to button for 15 times

Abhay

Finance

43 Points Joined June 2011

Originally posted by : Aman
	i am too confused about that step is it sign of multiply???

Yes it's a little tricky but very simple.

What the second last step means is that you have to hit "multiplication" button than hit "equal to" button....NOW don't hit "equal to" 15 times BUT repeat the same process [ Hit "multiplication" than "equal to"] again for 15 times.

Hope it's clear now

Tony John

Chartered Accountant

6085 Points Joined November 2011

Yes its working !!! Thanks !!!

Akanksha Jain

Article

690 Points Joined July 2011

U need not press (√) and (x=) 15 times.. u get the ans by doing it 12 times also...

many of my teachers told me this..

CA Ayush Agarwal

Kolkata-Pune-Mumbai

27344 Points Joined October 2007

Originally posted by : Akanksha Jain
	U need not press (√) and (x=) 15 times.. u get the ans by doing it 12 times also... many of my teachers told me this..

Yes, Its Quite Old.

You Can do It by 12 Times Instead of 15 Times.

Btw Thanx for Sharing With All.

Guest

Originally posted by : Akanksha Jain
	U need not press (√) and (x=) 15 times.. u get the ans by doing it 12 times also... many of my teachers told me this..

Of course, we will get.... as the number increases more accurate answer will be obtained...

Anyway thanks Akanksha Jain and CA Ayush

CA Bhinang Tejani

Teacher..

734 Points Joined December 2012

U can do it 10 12 15 whatever time u wish to... Its only that if u use 15 than use 15 at both places... More number u use... More accurate is ur answer