Is There a Value of x in [0,1] Such That f(x)=x for a Continuous Function f?

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jmich79
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Suppose that f is ais continuos function defined on [0,1] with f(0)=1 and f(1)=0. show that there is a value of x that in [0,1] such that f(x)=x. Thank You.
 
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A.) This isn't a differential equation
B.) This should be in the homework section
C.) Look at f(x)-x