Doubtnut
18,806 old videos with fewer than 5,000 views from this channel.
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2:36
IIT JEE TRIGONOMETRIC FUNCTIONS In ` A B C ,`
as semicircle is inscribed, which lies on the side ...
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4:25
IIT JEE TRIGONOMETRIC FUNCTIONS If `I`
is the incenter of ` A B Ca n dR_1, R_2,a n dR_3`
re, resp...
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3:33
IIT JEE TRIGONOMETRIC FUNCTIONS In a circle of radius `r ,`
chords of length `aa n dbc m`
subtend...
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5:08
IIT JEE LIMITS AND DERIVATIVES `lim_(x->oo)cot^(-1)(x^(-a)log_a x)/(sec^(-1)(a^xlog_x a)),(a ...
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1:56
IIT JEE SEQUENCES AND SERIES If three positive real numbers `a,,b ,c`
are in A.P. sich that `a b...
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2:31
IIT JEE COMPLEX NUMBERS AND QUADRATIC EQUATIONS If `z_1=9y^2-4-10 i x ,z_2=8y^2-20 i ,w h e r ez_...
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1:33
IIT JEE RELATIONS AND FUNCTIONS Plot the curve `y=(log)_e(-x)dot`
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1:55
IIT JEE RELATIONS AND FUNCTIONS Sketch the graph for `y=|sinx|dot`
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3:04
IIT JEE LIMITS AND DERIVATIVES If
`y=sqrt(log{sin((x^2)/3-1)})`, `t h e n` find `(dy)/(dx)dot`
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4:06
IIT JEE LIMITS AND DERIVATIVES The value of `(lim_(n- gt oo)[(2n)/(2n^2-1)cos(n+1)/(2n-1)-n/(1-2n...
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3:03
IIT JEE LIMITS AND DERIVATIVES Suppose that `f`
is a function such that `2x^2lt=f(x)lt=x(x^2+1)`
...
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3:03
IIT JEE LIMITS AND DERIVATIVES Suppose that `f`
is a function such that `2x^2lt=f(x)lt=x(x^2+1)`
...
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2:56
IIT JEE SEQUENCES AND SERIES If the first and the nth terms of a G.P., are `aa n db ,`
respective...
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2:25
IIT JEE TRIGONOMETRIC FUNCTIONS Show that `cos^2theta+cos^2theta(alpha+theta)-2cosalphacostheta"c...
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1:49
IIT JEE COMPLEX NUMBERS AND QUADRATIC EQUATIONS Convert `(1+3i)/(1-2i)`
into the polar form.
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1:54
IIT JEE SEQUENCES AND SERIES The first and second terms of a G.P. are `x^4a n dx^n ,`
respectivel...
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1:39
IIT JEE SEQUENCES AND SERIES If `a ,b ,c ,d ,e ,f`
are A.M.s between 2 and 12, then find the sum ...
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2:44
IIT JEE TRIGONOMETRIC FUNCTIONS In triangle `A B C ,R(b+c)=asqrt(b c),w h e r eR`
is the circumr...
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2:08
IIT JEE TRIGONOMETRIC FUNCTIONS In any triangle `A B C ,(a^2+b^2+c^2)/(R^2)`
has the maximum valu...
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2:58
IIT JEE TRIGONOMETRIC FUNCTIONS In ` A B C ,A(2pi)/3,b-c=3sqrt(3)c m`
and area of ` A B C=(9sqrt(...
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1:50
IIT JEE TRIGONOMETRIC FUNCTIONS If `D`
is the mid-point of the side `B C`
of triangle `A B C`
and...
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2:46
Show that the segment joining the mid-points of a
pair of opposite sides of a parallelogram,...
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2:35
IIT JEE BINOMIAL THEOREM Find the coefficient of `x^k in1+(1+x)+(1+x)^2++(1+x)^n(0lt=klt=n)dot`
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1:32
IIT JEE COMPLEX NUMBERS AND QUADRATIC EQUATIONS Prove that `z=i^i ,w h e r ei=sqrt(-1)`
, is pure...