yangtheary

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9 years, 359 days

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These are questions asked by yangtheary

Find the value: P=sin(10)sin(30)sin(50)...sin(890) ?

If f(n)=a^n+b^n+c^n   and f(1)=1,f(2)=2,f(3)=3 ,n=1,2,3,.... Find f(5) ?

Let a,b and c be the three roots of the equation :2012x^3+2013x+2014=0.Find (a+b)^3+(b+c)^3+(c+a)^3?

Find a(n)of sequence:5, 7, 7, 2, 1, 5, 6, 6, 4, ...............

Find a(n)of sequence1,8,1,4,7,0,7,0,....   (n=1,2,3,4,...) ,

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