Doubtnut
1,097 old videos with fewer than 5,000 views from this channel.
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If `2cos^2theta-2sin^2theta=1` , then `theta` equals to
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(D) All values of a such that the three equation `ax+y=1 , x+y=2 , x-y=1` are simultaneously s...
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Find the values of `a` and `b` if `A = B,`
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. A straight line touches the rectangular hyperbola `9x^2-9y^2=8` and the parabol...
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If `z = (sqrt(3+i))/2` (where `i = sqrt(-1)`) then `(z^101 + i^103)^105` is equal to
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If `|z^3+1/z^3| lt=2` then `|z+1/z|` cannot exceed
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Find A and B so that `y = A sin 3x + B cos 3x` satisfies the equation `(d^2y)/dx^2+4dy/dx+3y=10...
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JEE MAINS 2018 If a is a complex number such that `|a|=1`, then find thevalue of a, so that equ...
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The roots of the cubic equation `(z+ab)^3=a^3,a !=0` represents the vertices of an equilatera...
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Solve the following limits `lim_(x- gt0)(sqrt(x^2+1)-1)/(sqrt(x^2+9)-3)`
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`2sin^2x+sqrt3cosx+1=0`
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12 packets of salt. each marked 2 kg, actually contained the following weights (in kg) of `1....
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The range of `Cos x+4sqrt2 sin x (x-pi/4)+6` is
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`5 sec x+4cos.x `
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The value of a for which exactly one root of the equation `e^ax^2 - e^(2a)x + e^a -1` lies betw...
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If the area of the parallelogram whose adjacent sides are `3veci-4vecj+lambdaveck` and `2vecj-...
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If `f(x)=(3^(1+ln x)/(x^(ln3)))` then `f(1993)` is
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`int1/((sinx+4)(sinx-1))dx`
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if `f(x^2)=4x^6 + 3x^4,` then `f(5)` is equal to .
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`f(x)+f(1-x)=2` then find `f(1/2)=`
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`x ,(206)x+(216)x=(424)x`
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The range of `f(x)=sqrt((2-|x|)/(4+|x|))` is
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The number of integers in the range of the function `f(x)=(x-[x])/(1+{x})` x(where [.] and {.}...
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The number of possible integral values of x satisfying `| x^2-8x+ 12|+|x|= |x^2-7x+ 12|` and `...