Experiences can answer this.

Calculus Level 1

Which is larger?

213 2 2386 238 6 2132 2132 ^ { 23 86 } \quad { \huge \square} \quad 2386 ^ { 2132}

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2 solutions

Saurabh Patil
Apr 16, 2015

I WARN YOU THAT THIS IS NOT A GENERAL METHOD!! BUT COULD BE APPLIED IN MANY SUCH CASES. Here the magnitude of the number ( 2132 and 2386 ) have a large difference ( at-least that is greater than 200 !!)

Let a = 213 2 2386 2132^{2386} and b = 238 6 2132 2386^{2132}

Calculate the value of log ( a ) and log ( b ) . The bigger the value is of any of the two numbers would mean that the larger is the number actually from the other

By the way the value of the " log " of two numbers would only tell you the number of digits the number contains .Here I have taken log to bare 10.

log ( a ) = 2386 log ( 2132 ) = 7942.48 log ( b ) = 2132 log ( 2368 ) = 7194.18

The number b has 748 digits less ( Place Value) and so it surely tells us that a > b

Ngo Vy
Feb 20, 2015

This is how i think ! Example : I have a small no. like : 2 and 5 ( I will take this 2 no. to make an example ) You do it with the same formula like the question of Adam : 2^5 .... 5^2 5^2 = 25 2^5 = 32 => 2^5 > 5^2 Ok, done =)

Then, how could you simplelize from 213 2 2386 2132^{2386} to 2 2 and 238 6 2132 2386^{2132} to 5? Any relativity?

Adam Phúc Nguyễn - 5 years, 10 months ago

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