Todd Moreno
01/30/2024 · Junior High School
Questão 15: (PUC-SP) O conjunto solução \( S \) da equação \( |2 x-1|=x-1 \) é:
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Step-by-step Solution
Solve the equation \( |2x-1|=x-1 \).
Solve the equation by following steps:
- step0: Solve for \(x\):
\(\left|2x-1\right|=x-1\)
- step1: Rewrite the expression:
\(\left|2x-1\right|-x+1=0\)
- step2: Separate into possible cases:
\(\begin{align}&2x-1-x+1=0,2x-1\geq 0\\&-\left(2x-1\right)-x+1=0,2x-1<0\end{align}\)
- step3: Calculate:
\(\begin{align}&x=0,x\geq \frac{1}{2}\\&x=\frac{2}{3},x<\frac{1}{2}\end{align}\)
- step4: Find the intersection:
\(\begin{align}&x \in \varnothing \\&x \in \varnothing \end{align}\)
- step5: Find the union:
\(x \in \varnothing \)
O conjunto solução \( S \) da equação \( |2x-1|=x-1 \) é o conjunto vazio, ou seja, não há solução para essa equação.
Quick Answer
O conjunto solução é vazio.
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