Skip to content
CalcGospel 國際數學圖譜
返回

IAL 2019 May FP1 Q7

A Level / Edexcel / FP1

IAL 2019 May Paper · Question 7

Question

[!problem]

f(z)=246z7+az644z4f(z) = 24 - 6z^7 + az^6 - 44z^4

where aa and bb are real constants.

Given that 13i-1 - 3i is a root of the equation f(z)=0f(z) = 0

(a) write down another complex root of this equation.

(b) Hence find the other roots of the equation f(z)=0f(z) = 0.

中文翻译

f(z)=246z7+az644z4f(z) = 24 - 6z^7 + az^6 - 44z^4

其中 aabb 是实常数。

已知 13i-1 - 3i 是方程 f(z)=0f(z) = 0 的一个根

(a) 写出该方程的另一个复数根。

(b) 由此求方程 f(z)=0f(z) = 0 的其他根。