若對非零常數(shù)m.函數(shù)f=2f是周期函數(shù).它的一個周期是 . 查看更多

 

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函數(shù)f(x)的定義域為R,數(shù)列{an}滿足an=f(an-1)(n∈N*且n≥2).

(Ⅰ)若數(shù)列{an}是等差數(shù)列,a1≠a2,且f(an)-f(an-1)=k(an-an-1)(k為非零常數(shù),n∈N*且n≥2),求k的值;

(Ⅱ)若f(x)=kx(k>1),a1=2,bn=lnan(n∈N*),數(shù)列{bn}的前n項和為Sn,對于給定的正整數(shù)m,如果的值與n無關,求k的值.

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函數(shù)f(x)的定義域為R,數(shù)列{an}滿足an=f(an-1)(n∈N*且n≥2).
(Ⅰ)若數(shù)列{an}是等差數(shù)列,a1≠a2,且f(an)-f(an-1)=k(an-an-1)(k為非零常數(shù),n∈N*且n≥2),求k的值;
(Ⅱ)若f(x)=kx(k>1),a1=2,bn=lnan(n∈N*),數(shù)列{bn}的前n項和為Sn,對于給定的正整數(shù)m,如果
S(m+1)nSmn
的值與n無關,求k的值.

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函數(shù)f(x)的定義域為R,數(shù)列{an}滿足an=f(an-1)(n∈N*且n≥2).
(Ⅰ)若數(shù)列{an}是等差數(shù)列,a1≠a2,且f(an)-f(an-1)=k(an-an-1)(k為非零常數(shù),n∈N*且n≥2),求k的值;
(Ⅱ)若f(x)=kx(k>1),a1=2,數(shù)學公式,數(shù)列{bn}的前n項和為Sn,對于給定的正整數(shù)m,如果數(shù)學公式的值與n無關,求k的值.

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函數(shù)f(x)的定義域為R,數(shù)列{an}滿足an=f(an-1)(n∈N*且n≥2).
(Ⅰ)若數(shù)列{an}是等差數(shù)列,a1≠a2,且f(an)-f(an-1)=k(an-an-1)(k為非零常數(shù),n∈N*且n≥2),求k的值;
(Ⅱ)若f(x)=kx(k>1),a1=2,bn=lnan(n∈N*),數(shù)列{bn}的前n項和為Sn,對于給定的正整數(shù)m,如果
S(m+1)n
Smn
的值與n無關,求k的值.

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函數(shù)f(x)的定義域為R,數(shù)列{an}滿足an=f(an﹣1)(n∈N*且n≥2).
(Ⅰ)若數(shù)列{an}是等差數(shù)列,a1≠a2,且f(an)﹣f(an﹣1)=k(an﹣an﹣1)(k為非零常數(shù),n∈N*且n≥2),求k的值;
(Ⅱ)若f(x)=kx(k>1),a1=2,,數(shù)列{bn}的前n項和為Sn,對于給定的正整數(shù)m,如果的值與n無關,求k的值.

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