JEE Math Practice Question
If the system of equations $$x+2y+3z=3$$ $$4x+3y-4z=4$$ $$8x+4y-\lambda z=9+\mu$$ has infinitely many solutions, then the ordered pair ($$\lambda,\mu$$) is equal to :
- A.$$\left( {{{72} \over 5},{{21} \over 5}} \right)$$
- B.$$\left( { - {{72} \over 5}, - {{21} \over 5}} \right)$$
- C.$$\left( { - {{72} \over 5},{{21} \over 5}} \right)$$
- D.$$\left( {{{72} \over 5}, - {{21} \over 5}} \right)$$
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