7.Binomial Theorem
normal

${\left( {3x - \frac{{{x^3}}}{6}} \right)^9}$ ના વિસ્તરણમાં મધ્યમ પદ મેળવો 

A

$ - \frac{{21}}{{16}}{x^{19}},\frac{{189}}{9}{x^{17}}$

B

$\frac{{21}}{{16}}{x^{19}},-\frac{{189}}{8}{x^{17}}$

C

$\frac{{201}}{{18}}{x^{17}},\frac{{21}}{{16}}{x^{18}}$

D

એક પણ નહી 

Solution

$n = 9$ No. of terms $= 10$ Middle term $= 5^{th}$ & $6^{th}$

Standard 11
Mathematics

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