函数f(x)满足f(0)=1,f(π)=2 且对于任意实数x,y 都有 f(x+y)+f(x-y)=2f(x)cos(y) 求f(x函数f(x)满足f(0)=1,f(π)=2 且对于任意实数x,y 都有 f(x+y)+f(x-y)=2f(x)cos(y) 求f(x

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函数f(x)满足f(0)=1,f(π)=2 且对于任意实数x,y 都有 f(x+y)+f(x-y)=2f(x)cos(y) 求f(x函数f(x)满足f(0)=1,f(π)=2 且对于任意实数x,y 都有 f(x+y)+f(x-y)=2f(x)cos(y) 求f(x
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函数f(x)满足f(0)=1,f(π)=2 且对于任意实数x,y 都有 f(x+y)+f(x-y)=2f(x)cos(y) 求f(x函数f(x)满足f(0)=1,f(π)=2 且对于任意实数x,y 都有 f(x+y)+f(x-y)=2f(x)cos(y) 求f(x
函数f(x)满足f(0)=1,f(π)=2 且对于任意实数x,y 都有 f(x+y)+f(x-y)=2f(x)cos(y) 求f(x
函数f(x)满足f(0)=1,f(π)=2 且对于任意实数x,y 都有 f(x+y)+f(x-y)=2f(x)cos(y) 求f(x)

函数f(x)满足f(0)=1,f(π)=2 且对于任意实数x,y 都有 f(x+y)+f(x-y)=2f(x)cos(y) 求f(x函数f(x)满足f(0)=1,f(π)=2 且对于任意实数x,y 都有 f(x+y)+f(x-y)=2f(x)cos(y) 求f(x
X,Y如果都等90度记3.14/2不是矛盾了吗

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