We can think of *z* as *z* = (*y*)^{4}, where *y* = 3*x* + 5. Then Since *z* = *y*^{4}, Since *y* = 3*x* + 5, . Putting this information back into the chain rule, This is almost the answer, but since we're asked for we want to give the final answer in terms of *x*. We plug in 3*x* + 5 for *y* to find That's all!
| |