self
Maths Puzzle
Numerical Ability
Co-ordinate geometry
If x increases linearly, how will a-x behave (a>1) ?
a. Increase linearly
b. Decrease linearly
c. Increase exponentially
d. Decrease exponentially
Read Solution (Total 8)
-
- its not a-x dear... its a^-x and the right answer will be decrease exponentially...
put a=2 and check fr values of x.
x=0 f()=1
x=1 f()= 1/2
x=2 f()= 1/4
x=3 f()= 1/8 and so on - 11 years agoHelpfull: Yes(32) No(3)
- B. Decrease linearly
put a=2(for eg)
since 'x' increases linearly;
2-1=1,
2-2=0,
2-3=-1,
2-4=-2 so it decreases linearly :) - 11 years agoHelpfull: Yes(6) No(15)
- Its a^-x
and it will decrease exponentially - 9 years agoHelpfull: Yes(2) No(1)
- d. Decrease exponentially
- 9 years agoHelpfull: Yes(2) No(0)
- d,it decreases exponentially
- 8 years agoHelpfull: Yes(2) No(0)
- It will increase linearly with difference of a
- 9 years agoHelpfull: Yes(0) No(3)
- ans :d
given x increase lineraly..
sub x =0,1,2,3,.. in a^-x
x=0 f()=1
x=1 f()=1/a
x=2 f()=1/a^2
clearly given a>1 hence the ans is D - 8 years agoHelpfull: Yes(0) No(1)
- b
because decreaseing linearly - 6 years agoHelpfull: Yes(0) No(1)
self Other Question