The positive root of x2 - 78.8 = 0 after first approximation by Newton Raphson method assuming initial approximation to the root is 14, is
9.821
9.814
9.715
9.915
B.
9.814
The order of the differential equation whose solution is y = a cos(x) + b sin(x) + ce-x , is
3
1
2
4
The differential equation of all parabolas with axis parallel to the axis of y is
y2 = 2y1 + x
y3 = 2y1
= y1
None of these