Mathematics
raffispro
2015-11-03 23:02:33
differentiation. questions 1 and 2
ANSWERS
katiria921
2015-11-04 03:44:41

For 11, we start by plugging 1 in, getting 2(1)^2+1-5=-2=y Plugging 1+m instead, we get 2(1+m)^2+1+m-5=2(1+2m+m^2)+1+m-5 = 2+4m+2m^2+1+m-5= 2m^2+5m-2. We have to find the difference between that and -2, so 2m^2+5m-2 -(-2)=2m^2+5m Differentiating 12, we use the Power Rule to get -6x^2+14, and plugging x=1 into it, we get -6(1)^2+14=-6+14=18

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