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If x^(2)+y^(2)=1, the minimum and maximu...

If `x^(2)+y^(2)=1`, the minimum and maximum values of `x+y` are

A

`-sqrt(2), sqrt(2)`

B

`-1,1`

C

`-(1)/(sqrt(2)),(1)/(sqrt(2))`

D

`-(1)/(sqrt(2)),2`

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WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2007-MULTIPLE CHOICE QUESTIONS
  1. The sum of first n terms of a series is 3^(n)(a+b) when a, b are const...

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  2. A and B are subsets of the universal set uu such that n (uu)=800, n(A)...

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  3. If x^(2)+y^(2)=1, the minimum and maximum values of x+y are

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  4. Let f(x)=a^(x)(a gt 0) be written as f(x)=g(x)+h(x), when g (x) is an ...

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  5. A=[(-i,0),(0,i)] then A^(T)A= (where I is 2xx2 identity matrix)

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  6. Show that ,the maximum value of ((1)/(x))^(x) is e^((1)/(e)

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  7. The value of the integeral int(-pi//7)^(pi//7)x^(3) cos^(2)x dx is

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  8. The sum of the series 1+(1)/(3.9)+(1)/(5.81)+(1)/(7.729)+……. to oo is

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  9. Using integration find the area of the region bounded by the parabola ...

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  10. If m and n denote respectively the order and degree of a differential ...

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  11. A particle is moving along the x - axis in such a way that it has disp...

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  12. The identity mapping I(c ) : S to S is defined as I(s)(x)=x for x in S...

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  13. If z = x + iy and arg ((z-1)/(z+1))=(pi)/(4), then the locus of (x, y)...

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  14. Solve the equation (dy)/(dx)+y/x=x^2

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  15. A partiole is moving in a straight line such that its velocity at time...

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  16. For an integrable function f (x) in [-3, 3], which of the following is...

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  17. The area bounded by the parabola y^(2)=2x+1 and the line x-y=1 is

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  18. If the circles x^(2)+y^(2)-4r x-2ry+4r^(2)=0 and x^(2)+y^(2)=25 touch ...

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  19. The minimum value of 6 cos alpha + 8 sin alpha + 11 is

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  20. If alpha, beta be the roots of the equation x^(2)+x+1=0, the value of ...

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