बिंदुओं (-5, 5) और (7, -3) वाले रेखा-खण्ड को आंतरिक रूप से 3 ∶ 1 के अनुपात में विभाजित करने वाले बिंदु के निर्देशांक क्‍या हैं?

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RRB ALP CBT I 29 Aug 2018 Shift 1 Official Paper
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  1. (-2, 3)
  2. (4, -1)
  3. \(\left(\frac{5}{2},0\right)\)
  4. (1, 1)

Answer (Detailed Solution Below)

Option 2 : (4, -1)
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दिया गया है:

बिंदुओं (-5, 5) और (7, -3) को आंतरिक रूप से 3 : 1 के अनुपात में मिलाने वाली रेखा

प्रयुक्त अवधारणा:

(x, y) = [{m1 × x2 + m2 × x1}/m1 + m2], [{m1 × y2 + m2 × y1}/m1 + 2]

गणना:

माना P(x, y) वह बिंदु है जो रेखाखंड को आंतरिक रूप से विभाजित करता है।

यहाँ, m1 = 3, m2 = 1

(x1, y1) = (-5, 5) और (x2, y2) = (7, -3)

उपरोक्त मानों को उपरोक्त सूत्र में रखने पर, हम प्राप्त करते हैं:

⇒ x = [{3(7) + 1(-5)}/4], y = [{3(-3) + 1(5)}/4]

⇒ x = 16/4, y = -4/4

x = 4, y = -1

(4, -1) वह बिंदु है जो रेखाखंड को विभाजित करता है। 

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