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If | vec a|=2,| vec b|=5a n d vec adot v...

If `| vec a|=2,| vec b|=5a n d vec adot vec b=0,` then ` vec ax( vec ax( vec ax( vec ax( vec a x( vec ax vec b)))))` is equal to `64 vec a` (b) `64 vec b` (c) `-64 vec b` (d) `-64 vec a`

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RESONANCE DPP-JEE MAINS-All Questions
  1. At the point P(a,a^(n)) on the graph of y=x^(n)(n in N) in the first q...

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  2. Let N=(4^5+4^4+4^4+4^4)/(3^5+3^5+3^5)dot(6^5+6^5+6^5+6^5+6^5+6^5)/(2^5...

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  3. If | vec a|=2,| vec b|=5a n d vec adot vec b=0, then vec ax( vec ax( ...

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  4. If x=(log)k b=(log)b c=1/2(log)c d , then (log)k d is equal to 6x (b)...

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  5. If f(x)=x^3+b x^2+c x+d and 0<b^2<c , then f(x) is a strictly increasi...

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  6. The number of solution of the equation, log(-2x)=2"log"(x+1) is: zero ...

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  7. Let vec a=2 hat i+ hat j+ hat k , hat b= hat i+2 hat j- hat k and a ...

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  8. If (log)3x=a and (log)7x=b , then which of the following is equal to (...

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  9. If a unit vector hat a in the plane of vec b=2 hato+ hat j& vec c= h...

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  10. The solution set of the inequality max {1-x^2,|x-1|}<1 is (-oo,0)uu(1,...

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  11. Number of solution satisfying, sqrt(5-(log)2x)=3-(log)2x are: 1 (b) 2 ...

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  12. If product of the roots of the equation 3x^2-4x+(loga^2-log(-a)+3)=0 i...

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  13. Number of solutions of the equation sin(1/3cos^(-1)x)=1 are only one ...

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  14. alpha,beta,gammaa n ddelta are the smallest positive angle in ascendin...

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  15. Area of the triangle formed by the x+y=3 and angle bisectors of the pa...

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  16. Solve the equation: (4sqrt(cos x/2)-5-(sqrt(2))/2)^2+ sqrt(2)(4sqrt(c...

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  17. Which of the following is greatest? tan1 (b) tan4 (c) tan7 (d) tan1...

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  18. The image of the pair of lines represented by a x^2+2h x y+b y^2=0 by ...

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  19. Find the equations of bi sectors of the angle between the lines 4x + 3...

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  20. Let P (sin theta, cos theta) (0 le theta le 2pi) be a point and let OA...

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