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admin 2020-03-26 其它
Given the coefficient of in the expansion of is 189,show that the value of n = 7.)我知道意思嗄~^^ coef题目:Given the coefficient of in the expansion of is 189,show that the value of n = 7.)
我知道意思嗄~^^ coeffient后面是X^2;of后面是(1+3x)^n
答案: 给膨胀系数赋值189时,显示结果是n等于7.
请参考选用.

Tags:show expansion coefficient coeffient 

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