Question : Prove that the integers mod 7 form a group under addition modulo 7. Answer : Set of integers mod 7 consists of the equivalence classes of the integers…
Question : Calculate the div and curl of the vector field \[F\left(x,y,z\right)=(3x^2z+ye^x)\hat{i}+(e^x)\hat{j}+ (x^3)\hat{k}\] Is the vector field conservative? Solution : (a) To Find Div (divergence) of the Vector Field \[F\left(x,y,z\right)=(3x^2z+ye^x)\hat{i}+(e^x)\hat{j}+…
Question : Calculate the div and curl of the vector field \[F\left(x,y,z\right)=x^2z\hat{i}+sin(yz)\hat{j}+ xyz\hat{k}\] Is the vector field conservative? Solution : (a) To Find Div (divergence) of the Vector Field \[F\left(x,y,z\right)=x^2z\hat{i}+sin(yz)\hat{j}+…
is {(1, 1, 0),(1, 0, 1),(0, 1, 1)} a set of linearly dependent or linearly independent vectors ? Answer : Linearly Dependent Set : A set S of elements or…
Question : Is the set {(1, -2),(-1, 1)} linearly dependent or linearly independent? Answer : Linearly Dependent Set : A set S of elements or vectors is said to be…
Question : Is the set {(1, 0),(0, 1),(0, −1)} linearly dependent ? Which vector is not a linear combination of the other 2 vectors. Answer : Linearly Dependent Set :…
Question : What is conservative force? Prove that the following force is conservative. \[\vec{F_1}=\left(x^2-y^2+x\right)\hat{i}-\left(2xy+y\right)\hat{j}\] Solution : Conservative Force : A force field vector F written as \[\vec{F\left(x,y,z\right)}=f_1\left(x,y,z\right)\hat{i}+f_2\left(x,y,z\right)\hat{j}+f_3\left(x,y,z\right)\hat{k}\] which is defined…
Question : Find real and imaginary parts of tan(z) Solution : Let z=x+iy be any complex numbers where x and y are real numbers. Since tan(z)=sin(z)/cos(z) Hence we first expand…
Question : Find real and imaginary parts of cos(z) Solution : Let z=x+iy be any complex numbers where x and y are real numbers. Now cos(z) can be written as…