题目 2 i) Find the first three terms, in descending powers of x. in th eexpansinωf(x-2/x)^6 .[3](ii) Find the coefficient of .x4 in the expansion OF(1+x^2)(x-2/x)^6 .[2] 相关知识点: 试题来源: 解析(i) (x-2/x)^6=x^6-12x^4+60x^2(ii) *(1+x^2)→60-...
In the expansion (ax+1/x)^n in descending powers of x, where a and n are positive integers, the fourth term of the expansion is the constant term.(i) Find the value of n and hence, express the constant term in terms of a.(ii) Using your value of n in (i), determine if a...
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8. In the expansion of (3x^3-1/(2x))^n in descending powers of x, where n is a positive integer, the seventh term of the expansion is a constant term.0 By considering the general term of the expansion (3x^3-1/(2x))^n , show that n is 8.[3](ii) Using your answer in...
:Which of the following polynomials is in descending powers of A,4-2x+3x^2-x^3 B,4+3x^2+2x-x^3 C,-x^3+3x^2+2x+4 D,-x^3+2x+3x^2+4 答案 C,多项式降幂 相关推荐 1:Which of the following polynomials is in descending powers of A,4-2x+3x^2-x^3 B,4+3x^2+2x-x^3...
利用三角函数幂公式、L′Hospital法则、分部积分公式,得到含有三角函数的第一类广义积分integral from n=0 to ∞(((sin(θ_x))/x)~ndx)的计算公式,其中n≥1且θ≠0。6) formulas for the sum of the powers of natural numbers 自然数幂和公式 1. Giving intuitive proofs of the trigonometric formulas ...