解析 C_1(3x)^3(1/2)Coefficient =54Expands at least one term correctly.PIOther terms: (3x)^4+4C^2(3x)^2(1/2)^2+C_3(10π)(1/2)^3+(1/2)^4Condone use of coefficients only.Selects their x^3 term PIStates correct coefficient. ...
Find the coefficient ofx10in the expansion of(2x2−3x)11 View Solution Find the coefficient ofx15in the expansion of(x−x2)10. View Solution Find the coefficient ofx8in the expansion of(x2−1x)10 View Solution The coefficient ofx−10in the expansion of(x2−1x3)10is ...
View Solution Find the coefficient ofx7in the expansion of(x2+1x2)11 View Solution Doubtnut is No.1 Study App and Learning App with Instant Video Solutions for NCERT Class 6, Class 7, Class 8, Class 9, Class 10, Class 11 and Class 12, IIT JEE prep, NEET preparation and CBSE, UP...
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-...
Find the coefficient ofx5y2in the expansion of(x+y)7. Application of Binomial theorem: This problem involves the application of binomial theorem to find the coefficient of a term. The binomial theorem simply helps us to find the required coefficient easily using combinatorics. ...
a) Find the coefficient of x7in the binomial expansions of (3-x)10. b) Find, in simplified form, the fourth term in the binomial expansion of (4-x)−1/2. For what values of x is this expansion valid? Binomial Theorem A polynomial that has exactly two terms is called ...
百度试题 结果1 题目21. The coefficient of the x3 term in the expansion of (2x + a)3 is 3920Find the possible values of a. 相关知识点: 试题来源: 解析 80a^2x^3+⋯ 3920=80a2 a^2=49 a=t7 a=70ra=—7 反馈 收藏
b) Hence, or otherwise, findthecosefi in the expansion of(1+4y-2y^2)^4 相关知识点: 试题来源: 解析 b) Letx=(y^2-2y) (1+4y=2y)4(1+4y-2y214=1—8(y2-2y)+24(y2-2y)2+ Equating the terms in yì gives coefficient of yis-8+6=88 反馈 收藏 ...
(18)/1)(x/3)+((18)/2)^3⋅(x/3)^2+((18)/3)^( - =1+6x+17x^2,+(272)/9x^3 ..(Guidance) M1: The method mark is awarded for an attempt at Binomial to get the second third or fourth term-need to see used with a correct power of x and a correct binomial coefficient...
(x-3))=A+B/(x+1)+C/(x-3) (a) find the values of the constants A, B and C.(4)(b)Hence, or otherwise, find the series expansion of(3x^2+4x-7)/((x+1)(x-3)) |x|1in ascending powers of x, up to and including the term in x2Give each coefficient as a ...