Macdonald Hardy
05/08/2023 · High School
3. ENG: What is the derivative of \( \frac{3 x^{2}}{1-\sin x} \) ?: FRE:Quel
UpStudy ThothAI Solution
Tutor-Verified Answer
Step-by-step Solution
To find the derivative of the function \( f(x) = \frac{3x^2}{1 - \sin x} \), we will use the quotient rule. The quotient rule states that if you have a function in the form \( \frac{u}{v} \), then the derivative is given by:
\[
\frac{d}{dx}\left(\frac{u}{v}\right) = \frac{u'v - uv'}{v^2}
\]
In this case, let:
- \( u = 3x^2 \)
- \( v = 1 - \sin x \)
Now, we need to find the derivatives \( u' \) and \( v' \):
1. \( u' = \frac{d}{dx}(3x^2) = 6x \)
2. \( v' = \frac{d}{dx}(1 - \sin x) = -\cos x \)
Now we can apply the quotient rule:
\[
f'(x) = \frac{u'v - uv'}{v^2} = \frac{(6x)(1 - \sin x) - (3x^2)(-\cos x)}{(1 - \sin x)^2}
\]
Now, simplify the numerator:
\[
= \frac{6x(1 - \sin x) + 3x^2 \cos x}{(1 - \sin x)^2}
\]
Thus, the derivative of \( \frac{3x^2}{1 - \sin x} \) is:
\[
f'(x) = \frac{6x(1 - \sin x) + 3x^2 \cos x}{(1 - \sin x)^2}
\]
Quick Answer
The derivative of \( \frac{3x^2}{1 - \sin x} \) is \( f'(x) = \frac{6x(1 - \sin x) + 3x^2 \cos x}{(1 - \sin x)^2} \).
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