1. 利用指数函数y=f(x)=2xy=f(x)=2^{x}y=f(x)=2x的图象,作出下列各函数的图象: (1)y=f(x−1)y=f(x-1)y=f(x−1); (2)y=f(∣x∣)y=f(\vert x\vert )y=f(∣x∣); (3)y=f(x)−1y=f(x)-1y=f(x)−1; (4)y=−f(x)y=-f(x)y=−f(x); (5)y=∣f(x)−1∣y=\vert f(x)-1\verty=∣f(x)−1∣; (6)y=−f(−x)y=-f(-x)y=−f(−x).