Testing your intelligence

I read this question somewhere and thought it was a good one......posting here to test eveyone's intelligence

11 Answers

24
eureka123 ·

no one !!!!!

1
ith_power ·

1. 17/9
2. 4/9
3. 1/12
4. 1/4

1
Rohan Ghosh ·

the first one simlifies to =

3∫f(x)dx

= 3(0∫1/3(x-1)2dx+1/3∫2/32x(1-x)dx+2/3∫1x2dx

1
ith_power ·

some mistake, limits misplaced i think,

1
Rohan Ghosh ·

yes i have corrected it now

1
Rohan Ghosh ·

for (2)

min value of f(x) comes out to be 4/9
max value of g(x) comes out to be 1/4

1
ith_power ·

max value of g(x) is 1/4

1
Rohan Ghosh ·

for (3)

it is nothing but

0∫1g(x)dx

which is equal to

0∫1/2x2dx+1/2∫1(x-1)2dx

1
ith_power ·

i think thre is some thing wrong with your picture rohan.

1
Rohan Ghosh ·

oops i didnt analyze g(x) properly ,
now i have got it and corrected it

i was doing without a pen to draw

i should have drawn a rough sketch !!

1
Rohan Ghosh ·

for part 4
from the graph we can see that f(x)
lies above g(x) in both (-1,0) and (0,1)

and we can figure out that if the point of non differentiability of g(x) is made to go 1/4 units upward
it will cut f(x) at exactly one point

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