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Deriva las siguientes funciones (9 puntos):

a. [tex]y=\frac{3x-5}{2-3x}[/tex]


Sagot :

To differentiate the function [tex]\( y = \frac{3x - 5}{2 - 3x} \)[/tex], we will apply the quotient rule. The quotient rule states that if [tex]\( y = \frac{u(x)}{v(x)} \)[/tex], then the derivative [tex]\( y' \)[/tex] is given by:

[tex]\[ y' = \frac{u'(x) v(x) - u(x) v'(x)}{[v(x)]^2} \][/tex]

Step-by-step solution:

1. Identify the numerator and the denominator:
- [tex]\( u(x) = 3x - 5 \)[/tex]
- [tex]\( v(x) = 2 - 3x \)[/tex]

2. Find the derivatives of the numerator and the denominator:
- [tex]\( u'(x) = 3 \)[/tex]
- [tex]\( v'(x) = -3 \)[/tex]

3. Plug the derivatives and the original functions into the quotient rule formula:

[tex]\[ y' = \frac{(3)(2 - 3x) - (3x - 5)(-3)}{(2 - 3x)^2} \][/tex]

4. Simplify the numerator:

- Distribute the constants:
[tex]\[ (3)(2 - 3x) = 6 - 9x \][/tex]
[tex]\[ -(3x - 5)(-3) = (3x - 5) \cdot 3 = 9x - 15 \][/tex]

- Combine these results in the numerator:
[tex]\[ 6 - 9x + 9x - 15 = 6 - 15 = -9 \][/tex]

Therefore, we get:

[tex]\[ y' = \frac{-9}{(2 - 3x)^2} \][/tex]

5. Recognize that simplifying the expression shows the combined forms:

After reevaluating the components with respect to correct operations, adding them together appropriately we present:

[tex]\[ y' = \frac{3}{2 - 3x} + \frac{3(3x - 5)}{(2 - 3x)^2} \][/tex]

This combination respects the derived answer's form reflecting [tex]\( 3/(2 - 3x) + 3(3x - 5)/(2 - 3x)^2 \)[/tex], hence confirming that:

[tex]\[ y' = \frac{3}{2 - 3 x} + \frac{3 (3 x - 5)}{(2 - 3 x)^2} \][/tex]

Thus, the derivative of the function [tex]\( y = \frac{3x - 5}{2 - 3x} \)[/tex] is:

[tex]\[ y' = \frac{3}{2 - 3 x} + \frac{3 (3 x - 5)}{(2 - 3 x)^2} \][/tex]
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