Consider a vector p=2i^+3j^+2k^ in the coordinate system (i^,j^,k^). The axes are rotated anti-clockwise about the Y-axis by an angle of 60°. The vector p in the rotate coordinate system (i^,j^,k^) is
A Iinear transformation T, defined as T\left[ {\begin{array}{*{20}{c}}
{{x_1}} \\
{{x_2}} \\
{{x_3}}
\end{array}} \right] = \left[ {\begin{array}{*{20}{c}}
{{x_1} + {x_2}} \\
{{x_2} - {x_3}}
\end{array}} \right], transforms a vector x for a three-dimensional real space to a two-dimensional real space. The transformation matrix T is
Let Tij=K∑εijkak and βk=i,j∑εijkTij, where εijk is the Levi-Civita density, defined to be zero, if two 'of the indices. coincide and +1 and -1 depending on whether ijk is even or odd permutation of 1, 2, 3. Then β3 is equal to
Given the recurrence relation for the Legendre polynomials (2n + 1) xPn(x) = (n + 1) Pn + 1(x) + Pn - 1(x), which of the following integrals has a non-zero value?
A finite wave train, of an unspecified nature, propagates along the positive X-axis with a constant speed v and without any change of shape. The differential equation among the four listed below, whose solution it must be, is
Which of the following vectors is orthogonal to the vector (ai^+bj^), where a and b (a ≠ b) are constants, and i^ and j^ are unit orthogonal vectors?