Question
Mathematics Question on Differential Calculus
Let the system of equations
x + ay + z = 1
2x + 4y + z = -b
3x + y + 2z = b + 2
have infinitely many solutions, where a and b are real constants. Then the value of 2a + 8b equals
A
-11
B
-10
C
-13
D
-14
Answer
-10
Explanation
Solution
The correct option is (B) : -10.