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MathNotes: Calculator Notes
Notes that calculate: type = for answers. Units, equations.
Equations, solved in place Type `2x + 3 = 7` and get `x = 2`. Quadratic and transcendental equations are solved numerically, with every real root listed (`x^2 - 4 = 0` → `x = -2, x = 2`). Multiply or divide with units and the result's unit is derived, not guessed: `100 km / 2 h` → `50 km/h`, `6 kg × 3 m / 2 s²` → `9 N`, `100 N / 2 m²` → `50 Pa`. Derived units (N, Pa, J, W, V) are recognised automatically, and dimensions that don't map to a real physical quantity are quietly dropped.
Variables carry their units
Define `v = 60 km/h` and `t = 2.5 h`, then write `v * t =` to get `150 km`.
Change one definition and every dependent result recalculates.
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About MathNotes: Calculator Notes on Product Hunt
“Notes that calculate: type = for answers. Units, equations.”
MathNotes: Calculator Notes was submitted on Product Hunt and earned 2 upvotes and 1 comments, placing #159 on the daily leaderboard. Equations, solved in place Type `2x + 3 = 7` and get `x = 2`. Quadratic and transcendental equations are solved numerically, with every real root listed (`x^2 - 4 = 0` → `x = -2, x = 2`). Multiply or divide with units and the result's unit is derived, not guessed: `100 km / 2 h` → `50 km/h`, `6 kg × 3 m / 2 s²` → `9 N`, `100 N / 2 m²` → `50 Pa`. Derived units (N, Pa, J, W, V) are recognised automatically, and dimensions that don't map to a real physical quantity are quietly dropped.
MathNotes: Calculator Notes was featured in Android (57.5k followers), Marketing (468k followers), Education (79.1k followers) and Money (4.7k followers) on Product Hunt. Together, these topics include over 166.5k products, making this a competitive space to launch in.
Who hunted MathNotes: Calculator Notes?
MathNotes: Calculator Notes was hunted by Guangteng Zhu. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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Guangteng Zhu