Doubtnut
1,097 old videos with fewer than 5,000 views from this channel.
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5:22
The eccentricity of an ellipse whose chords `y=x and 3y = -2x` are such that each bisects the
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2:22
`lim_(x- gt3) (sqrt(3x)-3)/(sqrt(2x-4)-sqrt2)` is equal to
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1:09
A family has 2 children.The probability that both of them are boys if it is known that one of
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1:48
`tantheta+tan2theta+tantheta.tan2theta=1`
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1:16
If `tan theta + tan 4theta + tan 7theta = tan theta tan 4theta tan 7theta`, then `theta` is e
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1:35
If `alpha,beta` are the roots of the equation `x^2 -p(x + 1) - c = 0`, then `(alpha + 1) (beta
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3:23
`"L e t"x+alphay-1=0, y^2=0` `alpha in R`be a variable chord of parabola `y^2=4x.` which cut
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1:36
`int (secx)/(ln(secx+tanx)`
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4:28
If `f(x) ={x^2 , x lt 2 and x^3+3x , x lt 2 and a , x=2`, then range of values of 'a' for wh
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5:57
A sail boat sails 2km due East, 5km `37^@` South of East and finally has an unknown displaceme
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1:35
Find the range of the function `f(x)=x+sqrt(x^2)`
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0:52
If the area of triangle `ABC` is 96 sq. cm. then its perimeter is 16 cm. then inradius is
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3:16
Find the domain of ` f(x) = sqrt(x^2-|x|-2)+ sqrt(-x^2 +16)`
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2:30
Consider the following statements p: Virat kohli plays cricket. q: Virat kohli is good at math
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3:42
Find the number of integral solutions of the equation `x_1x_2x_3x_4=210`
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2:52
The larger of `cos (log theta) and log (cos theta)` if `pi/2 lt theta lt pi/2`, is
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9:03
The two lines pairs `y^2-4y+3=0` and `x^2+4xy+4y^2-5x-10y+4=0` encloses a 4 sided convex polyg
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1:07
- Write the equation which represents x axis.
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4:20
STATEMENT-1: `f:R- gtR, f(x) = ax^5 + bx^4 + cx^3 + dx^2 + ex +f, a, b, c, d, e, f in R` is on
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4:38
Statement-1: If the graph of the function `y=f(x)` has a unique tangent at the point `(a, 0)`
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3:41
`lim_(x- gtoo) {sqrt(x^4-x^2+1)-ax^2-a}=A` finite value. Then a is equal to-
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3:06
Given the function `g(x) = sqrt(6 - 2x)` and `h(x) = 2x^2 - 3x + a.` Then
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7:28
Graph of `f(x)` is shown in adjacent figure, then in `[0, 5]`
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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