A particle moves along the straight line $y=3 x+5$. Which coordinate changes at a faster rate?
$x$-coordinate
$y-$coordinate
Both $x$ and $y$ coordinates
Data insufficient.
In the given figure, each box represents a function machine. A function machine illustrates what it does with the input.Which of the following statements is correct?
The side of a square is increasing at the rate of $0.2\,cm / s$. The rate of increase of perimeter w.r.t. time is $...........\,cm / s$
As $\theta$ increases from $0^{\circ}$ to $90^{\circ}$, the value of $\cos \theta$ :-
The area $'A'$ of a blot of ink is growing such that after $t$ second its area is given by $A = (3t^2 + 7)\,cm^2$. Calculate the rate of increase of area at $t = 2\, sec$. .......... $cm^2/s$