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f(n)中共有n项,当n=2时,f(2)=+ f(n)中共有n+1项,当n=2时,f(2)=++ f(n)中共有n2-n项,当n=2时,f(2)=+ f(n)中共有n2-n+1项,当n=2时,f(2)=++
(F/A,i,n)=(P/F,i,n)x(A/P,i,n) (P/F,i,n)=(A/F,i,n)x(P/A,i,n) (P/F,i,n)=(P/F,i,n)x(A/F,i,n),n+n=n (A/P,i,n)=(F/P,i,n)x(A/F,i,n) (A/F,i,n)=(P/F,i,n)x(A/P,i,n)
(F/A,i,n)=(F/P,i,n)×(P/A,i,n) (F/P,i,n)=(F/P,i,n1)×(F/P,i,n2),其中:n1+n2=n (F/P,i,n)=(F/P,i,n1)+(F/P,i,n2),其中:n1+n2=n (P/A,i,n)=(P/F,i,n)/(A/F,i,n)
F=A(P/A,I,n)(F/P,i,n) F=A(A/F,i,n) F=A(P/A,i,n)(P/F,i,n) F=A(F/A,i,n) F=A(A/P,i,n)(P/F,i,n)
∀n∈N*,f(n)>n ∀n∉N*,f(n)>n
∃n∈N*,f(n)>n ∀n∉N*,f(n)>n
f(-n)<f(n-1)<f(n+1) f(n-1)<f(-n)<f(n+1) f(n+1)<f(-n)<f(n-1) f(n+1)<f(n-1)<f(-n)
(F/P,i,n)=(A/P,i,n)×(F/A,i,n) (F/A,i,n)=(F/P,i,n)×(P/A,i,n) (A/P,i,n)×(F/A,i,n)×(P/F,i,n)=1 (A/P,i,n)=(A/F,i,n)-i
(F/P,i,n)=(F/P,i,n1)+(F/P,i,n2) (F/P,i,n)=(F/P,i,n1)×(F/P,i,n2) (P/F,i,n)=(P/F,i,n1)+(P/F,i,n2) (P/F,i,n)=(P/F,i,n1)×(F/P,i,n2)
(F/A,i,n)=(P/F,i,n)×(A/P,i,n) (P/F,i,n)=(A/F,i,n)×(P/A,i,n) (P/F,i,n)=(P/F,i,n1)×(P/F,i,n2),n1+n2=n (A/P,i,n)=(F/P,i,n)×(A/F,i,n) (A/F,i,n)=(P/F,i,n)×(A/P,i,n)
∀n∈N.*,f(n)∉N.*且f(n)>n ∀n∈N.*,f(n)∉N.*或f(n)>n ∃n0∈N.*,f(n0)∉N.*且f(n0)> n0 ∃n0∈N.*,f(n0)∉N.*或f(n0)> n0
(F/A,i,n)=[(P/F,i,n)(A/p,i,n)]-1 (A/P,i,n)=(A/F,i,n)+i (A/F,i,n)=(A/P,i,n)-i (F/P,i,n)=(A/P,i,n)/(F/A,i,n) (A/P,i,n)(F/A,i,n)=(P/F,i,n)
(F/A,i,n)=(F/P,i,n)×(P/A,i,n) (P/A,i,n)=(P/F,i,n)/(A/F,i,n) 1/(F/A,i,n)=(F/A,i,1) (F/P,i,n)=(F/P,i,n1)×(F/P,i,n2) (P/F,i,n)=(P/F,i,n1)+(P/F,i,n2)其中n1+n2=n
∀n∈N.*,f(n)∉N.*且f(n)>n ∀n∈N.*,f(n)∉N.*或f(n)>n ∃n0∈N.*,f(n0)∉N.*且f(n0)>n0 ∃n0∈N.*,f(n0)∉N.*或f(n0)>n0
(F/A,i,n)=(F/P,i,n)×(P/A,i,n) (F/P,i,n)=(F/P,i,n1)×(F/P,i,n2)其中n1+n2=n (P/F,i,n)=(P/F,i,n1)+(P/F,i,n2)其中n1+n2=n (P/A,i.n)=(P/F,i,n)/(A/F,i,n) 1/(F/A,i,n)=(A/F,i,n)
int f(int n)if(n<1)return 1;else return n*f(n+1); int f(int n)if(n>1)return 1;else return n*f(n-1); int f(int n)if(abs(n)<1)return 1;else return n*f(n/2); int f(int n)if(n>1)return 1;else return n*f(n*2);)
(F/A,i,n)=(F/P,i,n)×(P/A,i,n) (F/P,i,n)=(F/P,i,n1)×(F/P,i,n2),其中:n1+n2=n (P/F,i,n)=(P/F,i,n1)+(P/F,i,n2),其中:n1+n2=n (P/A,i,n)=(P/F,i,n)/(A/F,i,n) 1/(F/A,i,n)=(F/A,i,1)
∀n∈N.*,f(n)∉N.*且f(n)>n ∀n∈N.*,f(n)∉N.*或f(n)>n ∃n0∈N.*,f(n0)∉N.*且f(n0)>n0 ∃n0∈N.*,f(n0)∉N.*或f(n0)>n0
F=A(P/A,I,n)(F/P,i,n) F=A(A/F,i,n) F=A(P/A,i,n)(P/F,i,n) F=A(F/A,i,n) F=A(A/P,i,n)(P/F,i,n)