Question
Download Solution PDFनिम्नलिखित प्रश्न पर विचार करें और निर्णय लें कि प्रश्न का उत्तर देने के लिए कौन सा कथन पर्याप्त है।
प्रश्न:
रेखा की ढलान m का मान ज्ञात कीजिये
कथन:
1) y = mx + 2
2) रेखा (2, 1) से गुजरती है
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFकथन 1∶
y = mx + 2
हम कथन 1 से कुछ प्राप्त नहीं कर सकते
कथन 2∶
रेखा (2, 1) से गुजरती है
हम कथन 2 से कुछ प्राप्त नहीं कर सकते
कथा 1 तथा 2 को जोड़ने पर∶
∵ रेखा (2, 1) से गुजरती है, यह रेखा के समीकरण y = mx + 2 को संतुष्ट करेगा
∴ रेखा की समीकरण में x = 2 तथा y = 1 रखने पर
⇒ 1 = 2m + 2
⇒ m = -1/2
∴ कथन 1 तथा 2 दोनों पर्याप्त हैं
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