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The cartesian equation of a line are 6x-...

The cartesian equation of a line are `6x-2=3y+1=2z-2`. Find its direction ratios and also find the vector of the line.

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To solve the problem, we need to find the direction ratios and the vector equation of the line given by the Cartesian equations \(6x - 2 = 3y + 1 = 2z - 2\). ### Step 1: Write the given equations in a standard form The given equations are: \[ 6x - 2 = 3y + 1 = 2z - 2 \] We can set each part equal to a parameter \(t\): \[ 6x - 2 = t, \quad 3y + 1 = t, \quad 2z - 2 = t \] ### Step 2: Express \(x\), \(y\), and \(z\) in terms of \(t\) From the equations, we can express \(x\), \(y\), and \(z\) as follows: 1. For \(x\): \[ 6x - 2 = t \implies 6x = t + 2 \implies x = \frac{t + 2}{6} \] 2. For \(y\): \[ 3y + 1 = t \implies 3y = t - 1 \implies y = \frac{t - 1}{3} \] 3. For \(z\): \[ 2z - 2 = t \implies 2z = t + 2 \implies z = \frac{t + 2}{2} \] ### Step 3: Identify the direction ratios The equations can be rewritten in the form: \[ x = \frac{1}{6}t + \frac{1}{3}, \quad y = \frac{1}{3}t - \frac{1}{3}, \quad z = \frac{1}{2}t + 1 \] From these equations, we can identify the coefficients of \(t\) which represent the direction ratios of the line: - The direction ratio for \(x\) is \(\frac{1}{6}\) - The direction ratio for \(y\) is \(\frac{1}{3}\) - The direction ratio for \(z\) is \(\frac{1}{2}\) To express these as integers, we can multiply by a common factor (in this case, 6): - Direction ratios: \(1, 2, 3\) ### Step 4: Find the vector equation of the line The vector equation of a line can be expressed as: \[ \mathbf{r} = \mathbf{a} + \lambda \mathbf{b} \] where \(\mathbf{a}\) is a position vector of a point on the line, and \(\mathbf{b}\) is the direction vector. From the direction ratios \(1, 2, 3\), the direction vector \(\mathbf{b}\) can be written as: \[ \mathbf{b} = i + 2j + 3k \] ### Step 5: Find a point on the line To find a point on the line, we can set \(t = 0\): - For \(x\): \[ x = \frac{0 + 2}{6} = \frac{1}{3} \] - For \(y\): \[ y = \frac{0 - 1}{3} = -\frac{1}{3} \] - For \(z\): \[ z = \frac{0 + 2}{2} = 1 \] Thus, a point on the line is \(\left(\frac{1}{3}, -\frac{1}{3}, 1\right)\). ### Step 6: Write the vector equation Now we can write the vector equation: \[ \mathbf{r} = \left(\frac{1}{3}i - \frac{1}{3}j + 1k\right) + \lambda (i + 2j + 3k) \] ### Final Answer 1. Direction Ratios: \(1, 2, 3\) 2. Vector Equation: \[ \mathbf{r} = \left(\frac{1}{3}i - \frac{1}{3}j + 1k\right) + \lambda (i + 2j + 3k) \]
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