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Mitosis in four beats
Mitosis is how one cell becomes two matching nuclei—essential for growth, repair, and keeping chromosome number stable.
You might ask what happens if a checkpoint fails and the cell still tries to divide — let’s find out next.
The derivative, visually
The derivative f′(x) is the instantaneous rate of change of f at x—the slope of the tangent line, not an average over an interval.
(f(x + h) − f(x)) / h → f′(x)
Power rule: d/dx xⁿ = n xⁿ⁻¹ (for integer n ≠ 0).
Next, let's see how we can use the power rule to find the derivative of a function.
Naming organic molecules
IUPAC names tell you the parent chain, functional groups (by priority), and substituents—so “C₄H₁₀O” isn’t ambiguous about which isomer you mean.
| Class | Typical suffix |
|---|---|
| Alkane | -ane |
| Alkene | -ene |
| Alcohol | -ol |
Stereochemistry (E/Z, R/S) matters when connectivity alone isn’t enough.
Now let’s see what happens when one formula could name several different molecules.
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Learn how to compute the inverse for view and projection matrices, use them for camera-space transforms, and handle cases where an inverse doesn’t exist.
Feedback from students using study tutor during early access.
I had four days before a thermodynamics exam, so I attached the lecture slides and told it to skip anything on ideal gases because I already had that down. It actually skipped it. The entropy card was still too dense, so I asked it to dumb it down and the second version finally clicked. I haven't opened the original slides since.
ASAtanas StoyanovMechanical engineering
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TBTarik BouchibaYear 12 student
I highlight whatever won't stay in my head and it all collects in one list. Night before a test I read that instead of the whole thing again.
INIfeoma NwosuMedical student
The subject scores are a bit brutal, honestly. Turns out I'd been quietly avoiding statistics for about a month.
DYDeniz YalcinSoftware engineer
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