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If (r+1)t h term is the first negative t...

If `(r+1)t h` term is the first negative term in the expansion of `(1+x)^(7//2),` then find the value of `rdot`

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CENGAGE ENGLISH-BINOMIAL THEOREM-All Questions
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  2. If |x|<1, then find the coefficient of x^n in the expansion of (1+2x+3...

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  3. If (r+1)t h term is the first negative term in the expansion of (1+x)^...

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  4. If |x|<1, then find the coefficient of x^n in the expansion of (1+x+x^...

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  5. If |x|>1, then expand (1+x)^(-2)dot

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  6. Find the cube root of 217, correct to two decimal places.

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  7. Find the coefficient of x^2 in (a/(a+x))^(1//2)+(a/(a-x))^(1//2)

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  8. Prove that ^10 C1(x-1)^2-^(10)C2(x-2)^2+^(10)C3(x-3)^2+-^(10)C(10)(x-1...

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  9. If the third term in the expansion of (1+x)^mi s-1/8x^2, then find the...

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  10. Prove that sum(r=0)^n r(n-r)(^nC r)^2=n^2(^(2n-2)Cn)dot

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  11. Prove that 1-^n C1(1+x)/(1+n x)+^n C2(1+2x)/((1+n x)^2)-^n C3(1+3x)/((...

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  12. Find the coefficient of x^(20) in (x^2+2+1/(x^2))^(-5)(1+x^2)^(40)dot

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  13. The number of terms in the expansion of (a+b+c)^n , where n in Ndot

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  14. Find the coefficient of x^(50) in the expansion of (1+x)^(101)xx(1-x+x...

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  15. Find the coefficient of x^4 in the expansion of (2-x+3x^2)^6dot

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  17. Find the term independent of x in the expansion of (1+x+2x^3)[(3x^2//...

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  19. Find the a ,b ,a n dn in th expansion of (a+b)^n if the first three te...

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  20. Find the coefficient of x^(25) in expansion of expression sum(r=0)^(50...

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