thx 4 all helpnagaya said:machan function eka diyanko man kiyanna karana hati
dan man 1st derivetive 1kn y welete answers gatha (if -root3 = -7, if +root3 = 7)
now we have to find wether its a max point or a min point ne
dan 1k hoyanne 2nd derivetive hoyanne kohomede?




