The function f(x) = sin(x) + cos(x) will be
an even function
an odd function
a constant function
None of these
A balloon is coming down at the rate of4 m/min and its angle of elevation is 45° from a point on the ground which has been reduced to 30°, after 10 min. Balloonwill be on the ground at a distance ofhow many metres from the observer ?
None of these
If the equations 2x - y + 2z = 2, x - 2y + z = - 4 and x + y + z = 4 have no solution, then the value of will be
1
2
3
- 4
If y = , then will be
C.