Question
Download Solution PDFयदि 1.5 ≤ x ≤ 4.5 है तो निम्नलिखित में से कौन सा सही है?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFगणना:
दिया गया, 1.5 ≤ x ≤ 4.5
तो क्रांतिक बिंदु x = 1.5 = \(\frac 3 2\) या x = 4.5 = \(\frac 9 2\)
⇒ 2x - 3 = 0 या 2x - 9 = 0
असमिका को समिका के रूप में बदलकर
∴ (2x - 3)(2x - 9) = 0
जैसा कि हम तरंगमय वक्र में देख सकते हैं (2x - 3)(2x - 9) का मान ऋणात्मक है।
(2x - 3)(2x - 9) ≤ 0
इसलिए विकल्प 4 सही उत्तर है।
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