MCQOPTIONS
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| 1. |
In the following partial differential equation, θ is a function of t and z, and D and K are functions of θ\(D\left( \theta \right)\frac{{{\delta ^2}\theta }}{{\delta {z^2}}} + \frac{{\delta K\left( \theta \right)}}{{\delta z}} - \frac{{\delta \theta }}{{\delta t}} = 0\)The above equation is |
| A. | a second order linear equation |
| B. | a second degree linear equation |
| C. | a second order non-linear equation |
| D. | a second degree non-linear equation |
| Answer» D. a second degree non-linear equation | |