Consider the infinite sequence {n^1/n} i.e. 1 , 2^1/2 , 3^1/3. . . . .Find the largest term in this sequence(if it exists).
Hint: Use Calculus
naveen
12 Years agoGrade 12
1 Answer
Varun Sharma
12 Years ago
f(x) = x^1/x
=e^((lnx)/x)
f`(x)=0
hence ln x=1
or x=e
f`(x) has maxima at e
nearest integers are 2 nd 3...
consider
2^1/2 nd 3^1/3
take power 6 both the sides
2^3<3^2
therefore
3^1/3 > 2^1/2
hence greatest x=3