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CBSE Class 12-science Answered

how (1,2) is stritly decreasing?
Asked by Srishti Singhal | 19 Mar, 2013, 09:27: PM
Expert Answer
You take any point in the interval (1, 2), say 1.5
Then, 
dy/dx = 4(1.5)(-0.5)(0.5) < 0
Hence, the function is decreasing in (1, 2).
Answered by | 19 Mar, 2013, 10:22: PM
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