Question
Download Solution PDF4 cosθ + 3 का न्यूनतम मान क्या है?
This question was previously asked in
UP TGT Mathematics 2021 Official Paper
Answer (Detailed Solution Below)
Option 2 : -1
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UP TGT Hindi FT 1
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Detailed Solution
Download Solution PDFसंकल्पना:
cos θ का न्यूनतम मान -1 होता है जब = 180° होता है। अतः, cos θ के मानों का परिसर – 1 ≤ cos θ ≤ 1 है।
गणना:
चूँकि cosθ का न्यूनतम मान -1 है।
तो, 4 cosθ + 3 का न्यूनतम मान = 4(-1) + 3
⇒ -4 + 3
⇒ -1
अत: 4 cosθ + 3 का न्यूनतम मान -1 है।
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