Question

y = x2^-x increases in which interval

Answer 1

you mean \[y = x^{2} - x
or
y= 2x^{-x}\]

Answer 2

It'll be a parabolalke this
http://www.wolframalpha.com/input/?i=y+%3D+x%5E2+-+x

Answer 3

if its is the first one, then for x<1/2

Answer 4

thanx wow u are a such true genius can u pls give me tips how to master my maths

Answer 5

ask siddhantsharan

Answer 6

Hahaa...
dude.
A doubt here.
y is minimum for x = 0.5
So it'll increase for both x > 0.5
And x < 0.5 ??

Answer 7

no, y', is negative for x >1/2

Answer 8

i mean x <1/2 , sry

Answer 9

DAmn.
Forgot the differential. My bad. :D

Answer 10

so the function will increase in \[x \in(1/2,\infty )\]