Question
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i x yang memenuhi persamaan ekponensial \( 2^{3 x+12}=3^{3 x+12} \) adalah

Ask by Sullivan O'Quinn. in Indonesia
Mar 10,2025

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Answer

\( x = -4 \)

Solution

To solve the equation \[ 2^{3x+12}=3^{3x+12}, \] we note that the bases \(2\) and \(3\) are different, and the only way two exponentials with different bases can be equal is if their exponents are equal to zero. Thus, we set \[ 3x+12=0. \] Now, solving for \(x\): 1. Subtract \(12\) from both sides: \[ 3x=-12. \] 2. Divide by \(3\): \[ x=-4. \] So, the solution is \[ x=-4. \]

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Untuk menjawab persamaan eksponensial \( 2^{3x+12} = 3^{3x+12} \), kita bisa mengambil logaritma kedua sisi. Dengan menggunakan logaritma natural atau logaritma basis 10, kita mendapatkan: \[ (3x + 12) \cdot \log(2) = (3x + 12) \cdot \log(3) \] Jika \( 3x + 12 \neq 0 \), kita dapat membagi kedua sisi dengan \( 3x + 12 \) dan memfokuskan pada logaritma: \[ \log(2) = \log(3) \] Namun kita tahu bahwa kedua logaritma tidak setara. Hal ini berarti \( 3x + 12 \) harus sama dengan 0 untuk memecahkan persamaan tersebut: \[ 3x + 12 = 0 \implies 3x = -12 \implies x = -4 \] Jadi, nilai \( x \) yang memenuhi persamaan adalah \( x = -4 \).

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