Question

跪求高一数学题解 要过程！！！

哪位高手能帮帮我 谢谢！！！

Answer 1

(1)
f(0) = 2f(0) -1, f(0) = 1
x > -1/2, f(x) > 0
x > 0, f(x-1/2) > 0
x>0 时，
f(x-1/2) = f(x) + f(-1/2) -1 = f(x) -1 > 0
f(x) > 1

对于任意 x1>x2
f(x1) =f(x2) + f(x1-x2) -1
f(x1)-f(x2) = f(x1-x2) -1 > 0
f(x) 是曾函数

（2）
f(x) = 2x+1