Difference between revisions of "Proportion/Introductory"
(New page: ==Problem== Suppose <math>\frac{1}{20}</math> is either '''x''' or '''y''' in the following system: <cmath>\begin{cases} xy=\frac{1}{k}\\ x=ky \end{cases} </cmath> Find the possible values...) |
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Revision as of 18:20, 24 September 2007
Problem
Suppose is either x or y in the following system: Find the possible values of k.
Solution
If , then
- and
Solving gets us:
Thus, there is no solution when
If , then
Thus, the possible values of k are .