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If the lines (2x+3y=6) and (kx+6y=12) are coincident, what is (k)?यदि (2x+3y=6) और (kx+6y=12) की रेखाएं संपाती हों, तो (k) क्या होगा?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (4)(4)
The second equation must be (2) times the first, so (kx=4x) and (k=4). In the coincident case, the whole line remains the same.दूसरा समीकरण पहले का (2) गुना होना चाहिए, इसलिए (kx=4x) और (k=4)। संपाती स्थिति में पूरी रेखा समान रहती है।
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