Manipal MET2021MathematicsBasics of Mathematics
If 9^ -x = 1 27 27 =(81)^ -y , then (x, y) is equal to
Options
- A( 9 4 , 9 8 )
- B( 3 2 , 3 4 )
- C(3,6)
- D(6,3)
Correct answer
A. ( 9 4 , 9 8 )
Step-by-step solution
Given, 9^ -x = 1 27 27 =(81)^ -y array ll & (3)^ -2 x =(3)⁻³(3)^ - 3 2 =(3)^ -4 y & -2 x=- 9 2 and -4 y=- 9 2 & x= 9 4 and y= 9 8 array