How to Download Doubtnut App in Pc
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How to Download Doubtnut App in Pc
19.8K viewsJun 2, 2021
YouTubeSIMPLE TECHNOLOGIES
`int(6/(1+x^2)+1 0^x-5c o s e c^2x)dx`
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`int(6/(1+x^2)+1 0^x-5c o s e c^2x)dx`
12 viewsOct 13, 2018
YouTubeDoubtnut
If `u=x^2tan^(-1)(y/x)-y^2tan^(-1)(x/y)`,prove that `(del^2u)/(delxdely)=(x^2-y^2)/(x^2+y^2)`
7:03
If `u=x^2tan^(-1)(y/x)-y^2tan^(-1)(x/y)`,prove that `(del^2u)/(delxd…
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if `A=[[i,0] , [0,i]]` where `i=sqrt(-1)` and `x epsilon N` then `A^(4x)` equals to:
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if `A=[[i,0] , [0,i]]` where `i=sqrt(-1)` and `x epsilon N` then `A^(4x)` eq…
67 viewsOct 12, 2018
YouTubeDoubtnut
If `y=(xsin^(-1)x)/(sqrt(1-x^2)),\\"p r o v et h a t\\"(1-x^2)(dy)/(dx)=x+y/xdot`
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If `y=(xsin^(-1)x)/(sqrt(1-x^2)),\\"p r o v et h a t\\"(1-x^2)(dy)/(dx)=x+y/xdot`
10.1K viewsFeb 20, 2018
YouTubeDoubtnut
The relation f is defined by f(x)=`{x^2,0 lt=x lt=3 (3x,3 lt=x lt=10)` g(x) =`{x^2,0 lt=x lt=...
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The relation f is defined by f(x)=`{x^2,0 lt=x lt=3 (3x,3 lt=x lt=1…
3.7K viewsOct 12, 2018
YouTubeDoubtnut
if `x=sqrt(3)+1/sqrt(3)` and `y=sqrt(3)-1/sqrt(3)` then` x^2-y^2` is
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if `x=sqrt(3)+1/sqrt(3)` and `y=sqrt(3)-1/sqrt(3)` then` x^2-y^2…
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Solve the following pair of equations: 43x + 67y= -24 67x + 43…
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Block 5 shown in figure moves to the right with a constant velocity o…
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Evaluate : `lim_(n to oo) (cos(x/2)cos(x/2^2)cos(x/2^3)....co…
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Prove that (2^n + 2^(n-1))/(2^(n+1) - 2^n) = 3/2
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Prove the following identity: ltmath gt ltmrow gt ltmsup gt ltmrow gt lt…
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Write the equation of the parabola with focus (0,0) and directrix ltmat…
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If `A+B+C=pi` then `sin2A+sin2B+sin2C=`
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5:54
The number of onto function `f : A to B where {1, 2, 3, 4, 5, 6) and B = {1,…
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4:48
ABC is a triangle. Circles with radii as shown are drawn inside the tria…
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A block of mass m is placed on a smooth inclined plane of inclinatio…
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The real values of 'a' for which the quadratic equation `2x^2-(a^3+8a-…
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If `A=[[a,c,b],[b,a,c],[c,b,a]]` then the cofactor of `a_(32)` in `A+A^T` is
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YouTubeDoubtnut
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Match column I with II column II and select the correct option from the …
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The number of intersecting points on the graph for `sinx=x/10` for `x i…
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5:34
Let minimum and maximum value of `y =2x^3 -15x^2 -36 x + 1 AA x in […
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5:20
Evaluate `int 1/(1+x^3)dx`
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Draw the graphs of the\r\n following equations:\n ltmath gt\n ltmrow gt\…
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If y^(1/4)+y^(-1/4)=2x be a curve satisfying the differential equatio…
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(2) If the coefficients of (2r + 4)th, (r - 2)th terms in the expansion of `(1 …
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Break the number `155` into three parts so that the obtained number…
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Sine formula proof :Sine Rule
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A thin lens is made with as material having refractive index mu=1.5. bo…
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One of the eigen vectors of the matrix `[(-5,2),(-9,6)]` is
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