CBSE Class 12-science Answered
For what values of a and b, the equations:
2x + 3y + 5z = 9;
7x + 3y - 2z = 8;
2x + 3y + az = b
will have a unique solution?
Asked by Manav Rajput | 08 May, 2011, 12:18: AM
Expert Answer
Find the determinant of the "coefficient matrix".
Let that determinant be zero.
Solve for "a".
I get a=5
Let that determinant be zero.
Solve for "a".
I get a=5
a unique solution
There will be a unique solution as long
as a is not 5; b may be any value
There will be a unique solution as long
as a is not 5; b may be any value
Answered by | 08 May, 2011, 11:10: AM
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