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Zhang Yu 10 Common McLaughlin Formula
10 What are the commonly used McLaughlin formulas? You may ask 10 the commonly used McLaughlin formula is as follows:
1、sinx=x-x^3/3! +x^5/5! -? +(- 1)^nx^(2n+ 1)/(2n+ 1)! +0^(x^(2n+2))。
2、cosx= 1-x^2/2! +x^4/4! -x^6/6! +? +(- 1)^nx^2n/(2n)! +0^(x^2n)。
3、ln( 1+x)=x-x^2/2+x^3/3-? +(- 1)^nx^(n+ 1)/(n+ 1)+0(x^(n+ 1))。
4、 1/( 1-x)= 1+x+x^2+? +x^n+0(x^n)。
5、( 1+x)^m= 1+mx+m(m- 1)/2! x^2+? +m(m- 1)? (m-n-+ 1)x^n/n! +0(x^n)。
6、e^x= 1+x+x^2/2! +? x^n/n! +e^θx x^(n+ 1)/(n+ 1)!
7、 1/( 1+x)= 1+x+x^2+x^3+? +x^n(x∈(- 1, 1))。
8、tanx=x+x^3/3+2x^5/ 15+ 17x^7/3 15+? +(- 1)^(n- 1)2^2n(2^2n- 1)/(2n)!
9、secx= 1+x^2/2+5x^4/24+6 1x^6/720+277x^8/8064+o(x^8)
10、coshx= 1+x^2/2! +x^4/4! +x^6/6! +? +x^2n/(2n)!
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