Doubtnut
1,680 old videos with fewer than 5,000 views from this channel.
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3:59
Consider `f(x) = lim_(x-oo)(x^n-sinx^n)/(x^n+sinx^n)`for`x gt0,x!=1,f(1)=0` then
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3:47
If `a,b,a and d` are natural numbers such that `a^5=b^6, c^3=d^4, and d-a=61,` then the smalle
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4:10
If `a_1,a_2...................,a_19` are the first `19` term of an `AP and a_1+a_8+a_12+a_19=2
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5:16
Let `d(P, OA) le min {d (P, AB), d(P, BC), d (P, OC)}` where d denotes the distance from the p
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3:47
Two lines `2x - 3y = 1 and x + 2y + 3 = 0` divide the xy plane in four compartments which are
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3:52
If `x=(1-sqrt(y))/(1+sqrt(y))` then `(dy)/(dx)` is equal to
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2:54
In the figure O is the centre of the circle and `/_POR=80^@.`Then `/_RQS` is
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2:45
The value of `int_0^1cos([2x]pi) cos(pix)dx` is equal to
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4:57
If `f:[pi/2,(3pi)/2]rarr[-1,1]` and is defined by `f(x)=sinx, then f^-1(x)` is given by
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9:13
A salesman has the following record of sales during three months for three items `A, B and C`
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2:41
Find the product of roots of the equation `(log_3 x)^2 – 2(log_3 x) - 5 = 0`
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1:14
If one root of the quadratic equation `x^2-3x + 1 = 0` be `alpha`, then its other root is give
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3:18
`int((4-5sinx)/(cos^2x)+1/(sin^2xcos^2x))dx`
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1:51
`int log(1+x^2)/(x^2) dx` By parts method
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2:50
If `7x+3 {x} =8[x]` where `[.]` is G.I.F and `{.}` is f.p.x then number of values of x is
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2:53
`intsqrt((sinx-sin^3x)/(1+sin^3x))dx=`
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2:42
If `f(x)=(sin^2x+4sinx+5)/(2sin^2x+8sinx+8)` then range of `f(x)` is
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7:05
If `A=1/9[[-8,1,4],[4,4,7],[1,-8,4]],` show that `A^-1=A'.`
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8:17
The shortest distance between the lines `2x + y + z - 1 = 0 = 3x + y + 2z - 2` and `x = y = z`
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1:42
No. of solutions for `|x|=|x+4|`
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4:27
The function `f: R^+ rarr(1, e)` defined by `f(x) =(x^2+e)/(x^2+1)` is
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2:46
`int(dx)/(2+cosx)`
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2:24
`log_8y=- 1/(log_3 2),` then the value of `y` is
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3:31
Solution of which of the following represent rational numbers ? `x^2=5`