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
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
D.
None of these
The equation of the family of parabolas with axis parallel to axis of y is
(x - a)2 = A(y - b)
On differentiating w.r.t. x, we get
2(x - a) = Ay1
Again differentiating w.r.t. x, we get
2 = Ay2
On again differentiating w.r.t. x, we get
y3 = 0