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Prove that cos 3x=4 cos ^3x-3cos x...

Prove that `cos 3x=4 cos ^3x-3cos x`

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OSWAAL PUBLICATION-SOLVED PAPER 2018-2-EXERCISE
  1. Let A={1,2,3,4,6}. Let R be the relation on A defined by {{a,b): a, b ...

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  2. Let A={1,2,3,4,6}. Let R be the relation on A defined by {{a,b): a, b ...

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  3. Prove that cos 3x=4 cos ^3x-3cos x

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  4. Represent the complex number Z = (1)/(1 + i) in the polar form.

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  5. Solve sqrt(5)x^(2) + x + sqrt(5)=0

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  6. Find the number of arrangements of the letters of the word INDEPENDENC...

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  7. Find the number of arrangements of the letters of the word INDEPENDEN...

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  8. Find the middle term in the expansion of ((x)/(3)+9y)^(10)

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  9. Insert five numbers between 8 and 26 such that the resulting sequence ...

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  10. Find the sum of the sequence 7,77,777,7777,…….n terms

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  11. Find the equation of the parabola which is symmetric about y-axis, and...

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  12. Find the derivative of (tanx) w.r.t x from first principal method ?

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  13. Veryfy by the method of contradiction that sqrt 7 is an irrational

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  14. A bag contains 9 discs of ehich 4 are red,3 are blue and 2 are yellow....

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  15. A bag contains of discs of which are red ,3 are blue and 2 are yell...

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  16. A bag contains 9 discs of which 4 are red 3 are blue and 2 are yellow....

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  17. A die is thrown. Find the probability that (i) A prime number will a...

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  18. A die is thrown.Write the sample space.Also find the probability of th...

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  19. A die is thrown, find the probability of following events: (i) A pri...

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  20. Define a modulus function . Draw its graph. Also write down its domai...

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