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Prove that : sin3x=3sinx-4sin^(3)x...

Prove that : `sin3x=3sinx-4sin^(3)x`

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SUBHASH PUBLICATION-ANNUAL EXAMINATION QUESTION PAPER MARCH 2013 SOUTH -PART C
  1. In a class of 40 students 30 play cricket and 18 play hockey. If the...

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  2. Find the domain and range of the function defined by f(x) =( x-1)/( x+...

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  3. If f (x) = {{:( 3x+ 1,0le xle2"") ,( 1+ 9x ,2lt xlt3 " then "),( 3 0...

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  4. Prove that : sin3x=3sinx-4sin^(3)x

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  5. If tan x =(3)/(4) and pi lt xlt (3pi )/( 2) find the values of sin 2x ...

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  6. Find the conjuate of ((3-2i)(2+3i))/((1+2i)(2-i)).

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  7. Solve the system of inequalities 3x-7 lt x +5 11 -5x le 1

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  8. How many words, with or without meaning can be made from the letters o...

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  9. If A.M.and G.M. of roots of a quadratic equation are 8 and 5 respectiv...

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  10. Find the equatin of the straight line with slope m and passing through...

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  11. Find the equation of a line that cuts of equal intercepts from the co-...

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  12. Find the equation of the hyperbola whose foci are (0,pm12) and the len...

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  13. Evaluate Lim ( xto 3) (x^(4) -81)/( 2x^(2) -5x -3)

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  14. Find the coefficient of x^(6) y^(3) in the expansion of ( x+ 2y ) ^(...

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  15. Differentiate of sin x w.r.t. x from first principles

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  16. Show that the statement " If x is a real number such that x^(2) +4x...

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  17. A coin is tossed twice.What is the probability that atleast one tail o...

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