A junior three vector problem, seek master solution! It is known that non-zero vectors a, B and C satisfy the following conditions: vector a + 3, vector b = vector C, 2, vector a-5, vector b = 3, vector C. It is proved that vector a is parallel to vector B PS: it's a problem-solving process~

A junior three vector problem, seek master solution! It is known that non-zero vectors a, B and C satisfy the following conditions: vector a + 3, vector b = vector C, 2, vector a-5, vector b = 3, vector C. It is proved that vector a is parallel to vector B PS: it's a problem-solving process~

The solution of the equations is: vector a = 14 / 11 vector C, vector b = - 1 / 11 vector C, then vector a = - 14 vector B, so parallel

What does AI mean

A lot of meaning

What kinds of currents are included in the current density vector J on the right side of the equal sign in the full current formula of Maxwell equations?
Why does J appear in the form of conductivity times E in the passive region and j in the form of external field source? What is the use condition of the formula J = conductivity × e? This problem has puzzled me for a long time,

J is a conducting current. It exists in a conductive medium, or it can be a current carrying current. It may be a little out of your learning range, so you don't need to worry about it. In the passive area, when the medium transmitting electromagnetic wave can conduct electricity, you can use J = σ e, and the non-conductive medium σ = 0. Naturally, there is no such term