写了很久,可惜了,超过一百字,发不了.
f(x)=根号2sin(πx/8+π/4)
f(x)=1,根号2sin(πx/8+π/4)=1,sin(πx/8+π/4)=(根号2)/2,πx/8+π/4=2kπ+π/2,或πx/8+π/4=2kπ+3π/2,得:x=16k,或x=16k+4.(k整数)
写了很久,可惜了,超过一百字,发不了.
f(x)=根号2sin(πx/8+π/4)
f(x)=1,根号2sin(πx/8+π/4)=1,sin(πx/8+π/4)=(根号2)/2,πx/8+π/4=2kπ+π/2,或πx/8+π/4=2kπ+3π/2,得:x=16k,或x=16k+4.(k整数)