5. 1 point which of the following is one of the criterions for linearity of an equation? (a) the dependent variable and its derivatives should be of second orde

5. 1 point Which of the following is one of the criterions for linearity of an equation? (a) The dependent variable and its derivatives should be of second order (6) The dependent variable and its derivatives should not be of same order (c)Each coefficient does not depend on the independent variable (d) Each coefticient depends only on the independent variable O a O b Oc Od 14. 1 point What is the degree of the homogeneous partial difierential equation, (a) Second-degree (b) First-degree c)Third-degree (d) Zero-degree O a O b O c O d