Que : 90. Fill in the blanks :

(i) Every differentiable function is ……….....

(ii) Area lying in the first quadrant and bounded by the circle x² + y² = 4 and the lines x = 0 and y = 2 is ………….

(iii) The number of arbitrary constants in the general solution of a differential equation of fourth order are………………

(iv) The length of the perpendicular from origin 0 to the plane ……….

(v) The common region determined by all the constraints including the non-negtative constraints x≥0, y≥0 of a linear programming problem is called ……….. for the problem.