Question

(i) In x > In y

(ii) e^x > e^y

(iii) y² > x²

(iv) cos x > cos y
1. (i) and (ii)
2. (i) and (iii)
3. (iii) and (iv)
4. (ii) and (iv)

Answer 1

Correct Answer - Option 1 : (i) and (ii)

From the logarithmic property, 

when x > y 

ln x > ln y if x and y both greater than 1.

and x > y 

ln x < ln y, if both x and y are less than 1.

but when x > y 

ex > ey  for any value of x and y.

but when x > y, x² > y²

 also cos x < cos y.