Doubtnut
1,680 old videos with fewer than 5,000 views from this channel.
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1:14
If `x:2 1/3 :: 21:50`, then what is the value of `x?`
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3:49
No of ways if r people out of N people will not be consecutive in circle.
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3:58
The normals at the extremities of the latus rectum of the parabola intersects the axis at an a
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7:16
Let roots of the equation `x^4-4x^3+6x^2-4x-15=0` are `alpha,beta,gamma` and `delta` then the
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8:28
`intcos^(- 1)sqrt(x/(a+x))dx`
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2:20
Find the eccentricity of the hyperbola `x^2/a^2-y^2/b^2=1` which passes through the points `
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2:34
28)) If `a^2+b^2=1, m^2 +n^2=1, then`
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3:52
If equation of the circle is in the form of `x^2+y^2+2gx+2fy+c=0` then prove that its centre
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8:08
Evaluate `int_(-4) ^3 |x^2 -4|dx`
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5:18
If a vertex of a square is at `(1, -1)` and one of its side lie alongthe line `3x-4y-17 = 0`
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8:54
`alpha` and `beta` are the roots of the equation `ax^2 + bx + c = 0` and `alpha^4, beta^4` ar
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5:31
Find the distance of the point `3hati -2hatj +hatk` from the plane `3x+y-z+2=0` measured paral
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6:39
A common tangent to the conics `x^2=6y and 2x^2-4y^2=9` is
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4:09
The value of the expression `((sin3theta)/sin theta)^2-((cos3theta)/costheta)^2` when `theta=7
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0:47
If 17 dolls cosr Rs306 , what do 29 dolls cost?
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5:06
`f: R- gtRf(x)=(x^2+x+5)(x^2+x-3)` `f(x)` is one-one, into
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3:04
`int(x^2+x+2)/(x^2+2x+2)dx=`
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2:12
if `intxtan^-1x dx=utan^-1x-x/2+c` then `u=`
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5:28
If `f(x)={[x] and x leq 0 and 1+[x] , x lt 0 and x in 1 then and x , x lt 0 and xin I`
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4:11
The value of c in Lagrange's theorem for the function `f(x) = {xcos(1/x) , x != 0 and 0 ,x=0`
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6:33
Two lines `zi-bar zi + 2 = 0 and z (1 + i) +bar z (1-i) + 2 = 0` intersect at a point P. Find
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7:01
Prove that three times the sum of the squares of the sides of a triangle is equal to fourtimes
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2:23
How many different products can be obtained by multiplying two or more of the numbers 2, 5, 6,
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1:50
If `(veca × vecb)xvecc=vecax(vecaXvecc),` where `veca, vecb,vecc` are any three vectors such