学习好帮手1.3.1学习好帮手ipad1.iPad2.3.学习好帮手45612:1231.PPT2.3.1.ipad23.学习好帮手学习好帮手2.y=x2y3.4.2.3.1.[-5,5]y=f(x)?VA3V=/(A)\./Tri-5-4\-3-1/012345-tw1：:f(x)二x21f(x)=kx+b(k丰0)学习好帮手2f(x)=ax2+bx+c(a丰0)k3y=_(k丰0)x123.1.2.3.f(x)二x2(0,+s)29,123451.2293.1ipad2.f(x)二x2(0,+s)学习好帮手3.1.f(x)xx(0,1)x[]f(x1)f(x2)学习好帮手21f(x)=-x2+2X+3(2)f(x)=-x2+2x+3iQO2112.2.3.1.2.学习好帮手1.3.178934:123272学习好帮手1.[-5,5]y=f(x)?f(x)二x21f(x)=kx+b(k丰0)2f(x)=ax2+bx+c(a丰0)k3y=—(k丰0)xf(x)=x2(0,+s)VA学习好帮手123451.f(x)xx(0,1)xf(x1)f(x2)学习好帮手31f(x)=-x2+2X+3(2)f(x)=-x2+2x+3
