How to solve the function f (x)= - sin 3x?

Question

How to solve the function f (x)= - sin 3x?

Answer 1

There is nothing to solve.

It is as good as saying "y = -sin3x". How can u solve it?

Unless you define x.

Answer 2

To "solve" there must be some eqn. What you have given is a functional relation. What exctly do you need?

Answer 3

What do you mean by " solve " ?

Differentiate perhaps ?

f (x) = - sin 3x

f ` (x) = - 3 cos 3x

Answer 4

Yeah, what the other contributors are saying is correct, you need f(x) to equal a value or another expression of any description.

For example, let's let f(x) = k, say.

Therefore...

-Sin(3x) = k

Sin(3x) = -k

3x = Sin^-1(-k)

x = (Sin^-1(-k))/3

Now, just put a k value into that equation. And provided it contains no other unknowns, it will come out as a straight value.

Hope this helped. =)