Consider the equation:
a) Use the discriminant to determine whether the graph of the equation is a parabola, an ellipse, or a hyperbola?
b) Use a rotation of axes to eliminate the xy-term. (Write an equation in XY-coordinates. Use a rotation angle that satisfies
We have given an equation,
the general Cartesian form of a conic section:
The discriminant is
On comparing the given equation with the general form of conic section, we get,
The discriminant is
So the equation is hyperbola.
b) In such a case, the relation between coordinate (x, y) and new coordinates (x', y') is given by:
We shall find the value of x,y by these values.
On plugging these values in the equation we get,
When a cold drink is taken from a refrigerator, its temperature is 5 degree C. After 25 minutes in a 20 degree C room its temperature has increased to 10 degree C. What is the temperature of the drink after 50 minutes?
How many minutes are there in hours?
Find the answer for power .
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When the net force acting on an object is zero, the total momentum of the system will:
B)increase with time;
C)decrease with time;
D)None of these
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How to write in scientific notation?