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rjanardhanan Just gettin' started!
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• Lap #[LAPCOUNT] ([LAPTIME])
If M = (4)^1/2 + (4)^1/3 + (4)^1/4 , then the value of M is,

Less than 3
Equal to 3
Between 3 and 4
Equal to 4
Greater than 4

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Thu Feb 16, 2012 8:49 pm

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Thu Feb 16, 2012 9:54 pm
rjanardhanan wrote:
If M = (4)^1/2 + (4)^1/3 + (4)^1/4 , then the value of M is,

Less than 3
Equal to 3
Between 3 and 4
Equal to 4
Greater than 4
m = √4 + (4)^(1/3) + (4)^(1/4)
m = 2 + (4)^(1/4) + (4)^(1/3)
m = 2 + (2²)^(1/4) + (4)^(1/3)
m = 2 + √2 + (4)^(1/3)
m = 2 + 1.4 + (4)^(1/3)
m = 3.4 + (4)^(1/3)

To find (4)^(1/3), we know that (4)^(1/4) is 1.4 approx, so (4)^(1/3) should lie between 1.4 and 2

Therefore, m > 4.8 and hence m > 4

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