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function

by billyr » Mon Feb 23, 2009 8:15 am
For which the functions f is f(x)=f(x-1) for all x?

a)f(x)=1-x

b)f(x)=1-x^2

c)f(x)=x^2 (1-x^2)^2

d)f(x)=x^2+1


The answer is c

thanks


please help me if possible with explanation.
Last edited by billyr on Mon Feb 23, 2009 8:44 am, edited 1 time in total.
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Re: function

by x2suresh » Mon Feb 23, 2009 8:30 am
billyr wrote:For which the functions f is f(x)=f(x-1) for all x?

a)f(x)=1-x

b)f(x)=1-x^2

c)f(x)=x^2 (1-x^2)

d)f(x)=x^2+1


The answer is c

thanks
thats not possible.. I believe there is type in option c

Answer would be C only if option : x^2 (1-x)^2
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