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If (1+x)^n=C0+C1x+C2x^2+…..+Cnx^n.then s...

If `(1+x)^n=C_0+C_1x+C_2x^2+…..+C_nx^n`.then show that `C_1+2C_2+….`nC_n=n.2^(n-1)`.

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UNITED BOOK HOUSE-MODEL QUESTION PAPERS-SET 15-EXERCISE
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  7. Find the value of :lim(xrarr0)(sin2x+sin6x)/(sin5x-sin3x)

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  8. If 4f(x) + 3f(-x) = 7 - 3x, find the value of f(1).

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  9. A box contains 6 white balls and 4 black balls, A ball is drawn at ran...

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  10. Mean of the getting mathematics number of 70 students is 45. If SD is....

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  12. Show that cot 7(1^@/2)=2+sqrt2+sqrt3+sqrt6

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  13. If a^4+b^4+c^4+a^2b^2=2c^2(a^2+b^2),, then show thatangleC=60^@or120^@

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  14. By ........in "Principle of Mathematical Induction" prove that for all...

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  15. If w be a imaginary cube root of uniyt and a+b+c=0 then show that (a+b...

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  16. How many different numbers of 5 digits each (without repetition of dig...

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  18. Show that the points (-4, 0). (6, 4), (5, 0)and (0, -2) form a trapezi...

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