Question

If y = sin3x, then dy/dx
is equal to​

Answer 1

Answer:

b

Step-by-step explanation:

let us say 3x=z

then dy/dx of sinz = cosz dz/dx

= cos3x d(3x)/dx = 3cos3x

Answer 2

$\huge\mathfrak{Hello♡}$

Answer is option (b).

$\frac{dy}{dx} = \frac{d(sin3x)}{dx}$

Now, the derivative of $sinx$ is

$cosx$ and the derivative of

$3x \:$ is $3$

So, dy/dx = cos(3x) × 3

which is equal to 3cos(3x)