what is the minimum value of a^2+6a-7
Follow Math Help Forum on Facebook and Google+
set it to zero and solve for a
Originally Posted by vegasgunner what is the minimum value of a^2+6a-7 a=1 and a=7 so 1 is the answer
Originally Posted by haftakhan a=1 and a=7 so 1 is the answer oi. He didn't show any workings, so I don't think it's a good idea just to give an answer like that.
Originally Posted by LimpSpider set it to zero and solve for a No, you need to set the DERIVATIVE equal to 0 and solve for a. You also need to give an argument as to WHY it is a minimum.
View Tag Cloud