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Calculus — Chapter 4.pdf
Chapter 4 · Differentiation
4.3 The Chain Rule
When one function sits inside another, the derivative of the whole is the derivative of the outside, evaluated at the inside, times the derivative of the inside.
Example 4.7. Differentiate f(x) = (3x + 1)5. Let u = 3x + 1, so that f = u5 and f′ = 5u4 · 3.
Figure 4.2 — the rate of change of an outer function scales with how fast its input moves.
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Calculus — Chapter 4.pdf
Chapter 4 · Differentiation
4.3 The Chain Rule
When one function sits inside another, the derivative of the whole is the derivative of the outside, evaluated at the inside, times the derivative of the inside.
Example 4.7. Differentiate f(x) = (3x + 1)5. Let u = 3x + 1, so that f = u5 and f′ = 5u4 · 3.
Figure 4.2 — the rate of change of an outer function scales with how fast its input moves.
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Calculus — Chapter 4.pdf
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Calculus — Chapter 4.pdf
Chapter 4 · Differentiation
4.3 The Chain Rule
When one function sits inside another, the derivative of the whole is the derivative of the outside, evaluated at the inside, times the derivative of the inside.
Example 4.7. Differentiate f(x) = (3x + 1)5. Let u = 3x + 1, so that f = u5 and f′ = 5u4 · 3.
Figure 4.2 — the rate of change of an outer function scales with how fast its input moves.
Thinking about “Why is there a 2x here?”
- ✓Outer function is sin(u)
- ✓Inner function is u = x²
- ✓Chain rule: cos(u) · du/dx
- ✓du/dx = 2x — that is the 2x
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Calculus — Chapter 4.pdf
Chapter 4 · Differentiation
4.3 The Chain Rule
When one function sits inside another, the derivative of the whole is the derivative of the outside, evaluated at the inside, times the derivative of the inside.
Example 4.7. Differentiate f(x) = (3x + 1)5. Let u = 3x + 1, so that f = u5 and f′ = 5u4 · 3.
Figure 4.2 — the rate of change of an outer function scales with how fast its input moves.
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Subjects
Why is there a 2x in the chain rule?
Calculus · Chapter 4.pdf · now
Why sine is used here
Trigonometry · Khan Academy · 2h
What #REF! actually means
Spreadsheets · Excel · yesterday
Reading a confusion matrix
Machine learning · arXiv PDF · Mon
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6 entriesWhy sine is used here
Trigonometry · from Khan Academy
What #REF! actually means
Spreadsheets · from Excel
Reading a confusion matrix
Machine learning · from arXiv PDF
Eigenvectors, in one picture
Linear algebra · from Lecture slides
Adding a footer page number
Office · from Microsoft Word
Why this p-value is misleading
Statistics · from Research paper
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An AI screen assistant desktop app. Press the shortcut, drag a box around anything you don't understand, ask, and tintlo explains it out loud while drawing the answer right on it.
Only the box you select, and only when you ask. Nothing outside it is ever captured, and nothing runs in the background.
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