Doubtnut
18,806 old videos with fewer than 5,000 views from this channel.
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4:54
JEE MAINS 2018 Two thirds of eth students in a class are boys and the rest girls. It
is known...
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3:35
IIT JEE RELATIONS AND FUNCTIONS Find the period of
`f(x)=sinx+tanx/2+sinx/(2^2)+t a n x/(2^3)++si...
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3:33
IIT JEE LIMITS AND DERIVATIVES Evaluate the limit:
`("lim")_(xvec0)(sqrt(2)-sqrt(1+cosx))/(sin^2x)`
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3:33
IIT JEE LIMITS AND DERIVATIVES Evaluate the limit:
`("lim")_(xvec0)(sqrt(2)-sqrt(1+cosx))/(sin^2x)`
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1:41
IIT JEE TRIGONOMETRIC FUNCTIONS Prove that
`(cos10^0+sin10^0)/(cos10^0-sin 10^0)=tan55^0`
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2:52
IIT JEE INVERSE TRIGONOMETRIC FUNCTIONS Which of the following is the solution set of the equatio...
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4:30
IIT JEE APPLICATION OF DERIVATIVES Find the equation of tangent to the curve
`y=sin^(-1)(2x)/(1+...
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2:48
IIT JEE APPLICATION OF DERIVATIVES Find the equation of the tangent to the
`c u r v ey={x^2sin1/...
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2:37
IIT JEE TRIGONOMETRIC FUNCTIONS If `tan^3A+tan^3B+tan^3C=3tanA* tanB*tanC ,`
then prove that tri...
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2:20
IIT JEE INVERSE TRIGONOMETRIC FUNCTIONS The number of solution of equation `sin^(-1)x+nsin^(-1)(1...
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2:27
IIT JEE INVERSE TRIGONOMETRIC FUNCTIONS If `|cos^(-1)((1-x^2)/(1+x^2))| lt pi/3,t h e n`
`x in [...
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4:19
IIT JEE LIMITS AND DERIVATIVES If `f(x)=xtan^(-1)x ,`
find `f^(prime)(sqrt(3))`
using the first p...
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2:14
IIT JEE INVERSE TRIGONOMETRIC FUNCTIONS If `alpha,beta(alpha lt beta)` are the roots of equation...
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2:23
IIT JEE LIMITS AND DERIVATIVES `f(x)=[2x]sin3pixa n df^(prime)(k^(prime))=lambdakpi(-1)^k`
(where...
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1:32
IIT JEE LIMITS AND DERIVATIVES Evaluate the limit:
`("lim")_(xvec1)("sin"(logx))/(logx)`
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3:20
IIT JEE LIMITS AND DERIVATIVES Evaluate:
`("lim")_(xvec0)1/xsin^(-1)((2x)/(1+x^2))`
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2:28
IIT JEE LIMITS AND DERIVATIVES Evaluate:
`("lim")_(xrarr0)(sinx^0)/x`
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4:32
IIT JEE APPLICATION OF DERIVATIVES For the curve `x y=c ,`
prove that the portion of the tangent...
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4:15
IIT JEE LIMITS AND DERIVATIVES Evaluate:
`("lim")_(xvecpi/4)(sqrt(2)cosx-1)/(cotx-1)`
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3:38
IIT JEE LIMITS AND DERIVATIVES Evaluate:
`("lim")_(xvec0)(1-cosm x)/(1-cosn x)`
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5:21
IIT JEE APPLICATION OF DERIVATIVES Find the equation of all possible normals to the parabola `x^...
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1:56
IIT JEE LIMITS AND DERIVATIVES Evaluate:
`lim_(x- gt 0)(tan2x-x)/(3x-sinx)`
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2:00
In which quadrant do the following points lie?
`(4,2)`
(ii) `(-3,5)`
`(-2,-5)`
(iv) `(4,-...
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3:15
IIT JEE LIMITS AND DERIVATIVES Evaluate:
`("lim")_(xvec2)(x-2)/((log)_a(x-1))`