Doubtnut
1,097 old videos with fewer than 5,000 views from this channel.
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5:10
Let a,b, c and d be non-zero numbers. If the point of intersection of the lines `4ax + 2ay+c=0...
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2:32
If `sintheta+cosectheta=2` , then the value of `sin^8theta+cosec^8theta` is
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4:51
Students in a school are preparing Banner for a rally to make people aware for saving What valu...
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3:23
the function `(|x-1|)/x^2` is monotonically decreasing at the point
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3:34
If `tantheta = p/q` then the value of `(p sintheta-q costheta)/(p sintheta + qcostheta` is
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2:44
Find the values of 'x' for which the rate of change of `x^4/4+x^3/3-x` is more than `x^4/4`
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3:23
mr joshi bequeathed `1/3` of his salary to his son, `1/5` to his daughter and the remaining to ...
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4:48
If the equations `x^2+ax+12=0`,`x^2+bx+15=0` and `x^2+(a+b)x+36=0` have a common root
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1:39
The locus of the point `sectheta+tantheta, sectheta-tantheta` is
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2:13
if `y=cos^2theta+sec^2theta` then
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5:23
`alpha=sin^(- 1)(cos(sin^(- 1)x))` and `beta=cos^(-1)(sin(cos^(-1)x))` then `tanalphatanbeta`
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3:03
Given `sec theta = 1 1/4`, find `tan (theta/2) and tan theta`
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2:15
`intx/(1-x^2) dx`
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2:37
`If a=cisalpha,b=cisbeta,c=cisgamma` then `(a^3b^3)/c^2=`
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2:49
For `2x3` matrix `A=[a_(ij)]` whose elements are given by `a_(ij)=(i+j)^2 /2` then `A` is equal...
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6:16
f x be real, prove that the value of`(2x^2-2x+4)/(x^2-4x+3)` cannot lie between -7 and 1
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3:45
find`dy/dx` of `y^y = sinx`
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1:48
A circular wire of radius 3 cm is cut and bent so as to lie along the circumference of a hoop w...
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2:28
`f(x)=x^x , x in (0,oo)` and let ` g(x)` be inverse of f(x) , then `g(x)'` must be
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2:56
`if (2.3)^x=(0.23)^y=1000` then find `1/x-1/y`
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1:19
If` a, b` and `c` are positive real numbers then ` a/b+b/c+c/a `is greater than or equal to
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3:35
If `g(x)` is a polynomial satisfying `g(x)g(y)=g(x)+g(y)+g(xy)-2` and `g(2)=5` then value of `g...
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1:54
If the matrix A=`|[1,2,3,0],[2,4,3,2],[3,2,1,3],[6,8,7,alpha]|` is of rank 3 then `alpha`=
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4:26
The ratio in which the line segment joining the points with P.V's `veci+2vecj+3veck,-3veci+6vec...