How many solutions exist for this set of equation ?
ab=1 , bc=2 , ca=8
A . 1
B . 2
C. 3
D . 6
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How many solutions exist for this set of equation ?
ab=1 , bc=2 , ca=8
A . 1
B . 2
C. 3
D . 6
What have you tried so far? You've done something like solve the first and third equations for "a=", expressed "c" in terms of "b", and then solved the second equation for "c=", and... then what?
Please be complete. Thank you! (Wink)
Hint : $\displaystyle a=2$ or $\displaystyle a=-2$.Quote:
Originally Posted by hooke
