ax+by=1ax−by=1y=cIn the system of three linear equations above, a,b and c are constants and b=0. If the system has exactly one solution, what is the value of c in terms of a and b ?
Q. ax+by=1ax−by=1y=cIn the system of three linear equations above, a,b and c are constants and b=0. If the system has exactly one solution, what is the value of c in terms of a and b ?
Identify Equations: Identify the system of equations.The system of equations is given by:\begin{cases}a x + b y = 1\a x - b y = 1\y = c\end{cases}
Conditions for Solution: Determine the conditions for a unique solution.For a system of linear equations to have exactly one solution, the equations must be independent and consistent. This means that no equation can be a multiple of another, and they must intersect at a single point.
Eliminate x: Subtract the second equation from the first to eliminate x.(ax+by)−(ax−by)=1−1This simplifies to:2by=0
Solve for y: Solve for y.Since b is not equal to 0 (b=0), we can divide both sides by 2b to find y.y=2b0y=0
Compare with Third Equation: Compare the result with the third equation.The third equation states that y=c. Since we found that y=0 for the system to have a unique solution, we can equate c to 0.c=0
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