Assertion : The expression n!(20 – n)! is minimum when n = 10.
Reason : $blank to the power of 2 straight m end exponent C subscript r$ is maximum when r = m.

an invertible matrix gives identity matrix as the product when multiplied with its inverse.

Let A = $open square brackets table row 1 0 0 row 0 1 1 row 0 cell negative 2 end cell 4 end table close square brackets$ & I = $open square brackets table row 1 0 0 row 0 1 0 row 0 0 1 end table close square brackets$ and A^-1= $fraction numerator 1 over denominator 6 end fraction$ [A²+CA+dI], find ordered pair (c,d) ?

the roots of the characteristic equation give us the eigenvalues of the matrix.

Let A = $open square brackets table row 1 0 0 row 0 1 1 row 0 cell negative 2 end cell 4 end table close square brackets$ & I = $open square brackets table row 1 0 0 row 0 1 0 row 0 0 1 end table close square brackets$ and A^-1= $fraction numerator 1 over denominator 6 end fraction$ [A²+CA+dI], find ordered pair (c,d) ?

the roots of the characteristic equation give us the eigenvalues of the matrix.

Which of the following is an intermolecular redox reaction?

In which of the following processes is nitrogen oxidised?

Which one of the following statements, is true-

A square matrix is one whose number of rows are equal to the number of columns.

Which one of the following statements, is true-

A square matrix is one whose number of rows are equal to the number of columns.

If A = $open square brackets table row cell cos invisible function application alpha end cell cell sin invisible function application alpha end cell row cell negative sin invisible function application alpha end cell cell cos invisible function application alpha end cell end table close square brackets$ and A adj A = $open square brackets table row k 0 row 0 k end table close square brackets$ , then k is equal to -

adjoint of a matrix is the transpose of the cofactor matrix of that matrix. cofactors are the resultant numbers when the corresponding row and column of an element is removed from the matrix.

If A = $open square brackets table row cell cos invisible function application alpha end cell cell sin invisible function application alpha end cell row cell negative sin invisible function application alpha end cell cell cos invisible function application alpha end cell end table close square brackets$ and A adj A = $open square brackets table row k 0 row 0 k end table close square brackets$ , then k is equal to -

adjoint of a matrix is the transpose of the cofactor matrix of that matrix. cofactors are the resultant numbers when the corresponding row and column of an element is removed from the matrix.

If A_αβ= $open square brackets table row cell cos invisible function application alpha end cell cell sin invisible function application alpha end cell row cell negative sin invisible function application alpha end cell cell cos invisible function application alpha end cell end table close square brackets$ , then which of following statement is true -

maths-

If $f left parenthesis x right parenthesis equals vertical line vertical line sin left parenthesis vertical line x vertical line minus 1 right parenthesis vertical line minus 2 vertical line space$ then

maths-General

Which of following is not a disproportionation reaction?

maths-

Consider a continuous function $f colon left square bracket 0 comma infinity right parenthesis rightwards arrow left square bracket 0 comma infinity right parenthesis space i f space f left parenthesis a b right parenthesis equals f left parenthesis a right parenthesis f left parenthesis b right parenthesis space$ for all a, b in the domain of ‘f’ and $L i m left parenthesis x rightwards arrow infinity right parenthesis space f left parenthesis x right parenthesis$ is a non zero finite number then

maths-General

The figure shows four pairs of polarizing sheets, seen face-on. Each pair is mounted in the path of initially unpolarized light. The polarizing direction of each sheet (indicated by the dashed line) is referenced to either a horizontal x-axis or a vertical y axis. Rank the pair according to the fraction of the initial intensity that they pass, greatest first

The figure here gives the electric field of an EM wave at a certain point and a certain instant. The wave is transporting energy in the negative z direction. What is the direction of the magnetic field of the wave at that point and instant

In the set up shown in Fig the two slits, $S subscript 1 end subscript$ and $S subscript 2 end subscript$ are not equidistant from the slit S. The central fringe at O is then

In a Young’s double slit experimental arrangement shown here, if a mica sheet of thickness t and refractive index $mu$ is placed in front of the slit $S subscript 1 end subscript comma$ then the path difference $left parenthesis S subscript 1 end subscript P minus S subscript 2 end subscript P right parenthesis$

The compound (A) is :