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9. यदि समीकरण निकाय kx + 2y = 5 और 3x + y=1 का एक अद्वितीयहल है, तो[पॉलिटेक्निक 2013](a) k = 6(b) k+6(c) k = 3(d)k #3 |
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Answer» hx + 2y = 5; (3x +y = 1)2 = 6x + 2y = 2; hx + 2y = 5; 6x + 2y = 2/ 6h = 3; h = 3/6=2 option (b) is the right answer of question option b.is the right answer options b is the right answer Option b is right answer |
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