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Philongphida
tinh cosx

tim m so nto dau tien

tinh tich phan bang phuong phap hinh thang

tim so nto<n

phan tich 1 so nguyen thanh tich cac so nto

e^x+sinx=2

tinh gan dung gia tri bieu thuc s=sqrt(2+n.....

tinh sinx

in cac so fibonaci <n

kiem tra m co phai la so fibonaci ko