Doubtnut
1,680 old videos with fewer than 5,000 views from this channel.
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5:03
In the expansion of `((x+1)/(x^(2/3)-x^(1/3)+1)-(x-1)/(x-x^(1/2)))^10` the term which doers n
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1:43
`int sqrt(1+sintheta`,dx=
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4:29
Locus of the point of intersection of tangents to the circle `x^2 + y^2 + 2x + 4y-1=0` which i
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4:11
51. Let `veca=veci+vecj, vecb = vecj+veck` & ` vecc = alphaveca + betavecb`. If the vectors ,
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4:45
The area enclosed by the curve `y^2 +x^4=x^2` is
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8:05
`int_0 ^ (pi/2) (x+sin x)/(1+ cos x) dx`
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3:42
In four throws with a pair of dice, what is the chance of throwing doublets twice at least?
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3:36
Perpendicular is drawn from the point `(0, 3, 4)` to the plane `2x - 2y + z = 10`. The coord
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3:22
If `sinx + cosx = 1/2, x in (pi/4,pi/2)`, then
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4:32
`2[1/(2x-1)+1/(3(2x-1)^3)+1/(5(2x-1)^5)+......oo]=f(x)` Then `f(x)` is equal to (given that `
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2:18
If `a,b,c` are unequal and positive then show that `(bc)/(b+c)+(ca)/(c+a)+(ab)/(a+b) lt1/2(a+b
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7:06
Tangents are drawn from the point P(3, 4) to the ellipse `x^2/9+y^2/4=1` touching the ellipse
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4:02
The number of solutions of `tan (5pi costheta) = cot (5pi sintheta)` for `theta in [0, pi]`
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1:57
For the given triangle which of the following options is correct
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5:02
A hyperbola whose transverse axis is along the major axis of the conic,`x^2/3+y^2/4= 4` and ha
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3:40
If sum of the coefficients in the expansion of `(a beta x^2015+a^2 y^2016+1)^2015` vanishes
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4:48
The value of `lim_(x- gt0) ( int_0 ^ (x^2) cost^2 dt)/( xsin x)` is
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3:39
The area of a right triangle is `28 cm^2.` One of its perpendicular sides exceeds the other b
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2:01
In a tennis tournament in which every pair has to play with every other pair, 10 players are p
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2:48
In how many ways 12 boys can be seated on 10 chairs in a row so that two particular boys alway
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2:32
If `alpha` and `2alpha^2` are roots of quadratic equation `(x^2 - ax + b) = 0`, then `(b+ 4b
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11:57
The length of common tangent to the ellipses `x^2/16+y^2/9=1 and x^2/9+y^2/16=1` is
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4:09
If `sin alpha and cos alpha` are roots of the equation `px^2 + qx+r=0` then :
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1:42
`int(dx)/(x^2sqrt(1-x^2))`