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CBSE Class 12-science Answered

please answer.
Asked by Kchawla94 | 02 Apr, 2019, 06:45: PM
Expert Answer
a = 4 - (b + 3)2 
Differentiating with respect to b.
begin mathsize 16px style da over db equals negative 2 open parentheses straight b plus 3 close parentheses
Consider comma
fraction numerator begin display style da end style over denominator begin display style db end style end fraction equals 0
minus 2 open parentheses straight b plus 3 close parentheses equals 0
straight b equals negative 3
Taking space second space derivative space
fraction numerator begin display style straight d squared straight a end style over denominator begin display style db squared end style end fraction equals negative 2 less than 0 end style
Hence, at b=-3 a is maximum.

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