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If function `f` satisfies the relation `f(x)*f^(prime)(-x)=f(-x)*f^(prime)(x)` for all x ,and f(0)=3, and if f(3)=3, then the value of `f(-3)` is ______________

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If function f satisfies the relation f(x)*f^(prime)(-x)=f(-x)*f^(prime)(x)for a l lx ,a n df(0)=3,a n dif f(3)=3, then the value of f(-3) is ______________

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