_________
/ 3
/ x + 1
3 / -------
\/ 3*x - 2
((x^3 + 1)/(3*x - 2))^(1/3)
Let .
Apply the power rule: goes to
Then, apply the chain rule. Multiply by :
Apply the quotient rule, which is:
and .
To find :
Differentiate term by term:
The derivative of the constant is zero.
Apply the power rule: goes to
The result is:
To find :
Differentiate term by term:
The derivative of the constant is zero.
The derivative of a constant times a function is the constant times the derivative of the function.
Apply the power rule: goes to
So, the result is:
The result is:
Now plug in to the quotient rule:
The result of the chain rule is:
Now simplify:
The answer is:
_________
/ 3 / 2 3 \
/ x + 1 | x x + 1 |
3 / ------- *(3*x - 2)*|------- - ----------|
\/ 3*x - 2 |3*x - 2 2|
\ (3*x - 2) /
-----------------------------------------------
3
x + 1
/ 2 \
| / 3 \ / 3 \ / 3 \|
__________ | | 2 1 + x | | 2 1 + x | 2 | 2 1 + x ||
/ 3 | |x - --------| 2 3*|x - --------| / 3\ 3*x *|x - --------||
/ 1 + x | \ -2 + 3*x/ 6*x \ -2 + 3*x/ 6*\1 + x / \ -2 + 3*x/|
3 / -------- *|2*x + ---------------- - -------- + ----------------- + ----------- - --------------------|
\/ -2 + 3*x | 3 -2 + 3*x -2 + 3*x 2 3 |
\ 1 + x (-2 + 3*x) 1 + x /
------------------------------------------------------------------------------------------------------------
3
1 + x
/ 3 / 2 / 3\\ / 2 / 3\\ 2 / 3 \ / 2 / 3\\ 2 \
| / 3 \ | 3*x 3*\1 + x /| 2 | 3*x 3*\1 + x /| / 3 \ / 3 \ | 2 1 + x | | 3*x 3*\1 + x /| / 3 \ / 3 \ / 3 \|
__________ | | 2 1 + x | 12*|x - -------- + -----------| 12*x *|x - -------- + -----------| 2 | 2 1 + x | | 2 1 + x | 6*|x - --------|*|x - -------- + -----------| | 2 1 + x | 4 | 2 1 + x | 2 | 2 1 + x ||
/ 3 | |x - --------| / 3\ | -2 + 3*x 2| 2 | -2 + 3*x 2| 9*x *|x - --------| 6*x*|x - --------| \ -2 + 3*x/ | -2 + 3*x 2| 9*|x - --------| 18*x *|x - --------| 18*x *|x - --------||
/ 1 + x | \ -2 + 3*x/ 54*\1 + x / 18*x \ (-2 + 3*x) / 54*x \ (-2 + 3*x) / \ -2 + 3*x/ \ -2 + 3*x/ \ (-2 + 3*x) / \ -2 + 3*x/ \ -2 + 3*x/ \ -2 + 3*x/|
3 / -------- *|2 + ---------------- - ----------- - -------- + ------------------------------- + ----------- - ---------------------------------- - --------------------- - ------------------- + ---------------------------------------------- + ------------------- + --------------------- - ---------------------|
\/ -2 + 3*x | 2 3 -2 + 3*x -2 + 3*x 2 3 2 3 3 / 3\ 2 / 3\ |
| / 3\ (-2 + 3*x) (-2 + 3*x) 1 + x / 3\ 1 + x 1 + x \1 + x /*(-2 + 3*x) / 3\ \1 + x /*(-2 + 3*x) |
\ \1 + x / \1 + x / \1 + x / /
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
3
1 + x