Find the one linewhere it went wrong.
Untangle Your Math, Step by Step
Snap a photo of your handwritten work. Instead of handing you the answer, Unknot boxes the first line where the logic slips and asks a question that helps you fix it yourself.
Find all values of that satisfy .
- [Step 2 error]divide both sides by x
Are you sure you can divide by ?
The hint stays folded. Open it only when you are stuck.
From high school math to college calculus and linear algebra: Limits of sequences, Derivatives, Substitution, Integration by parts, Trigonometry, Exponents and logs, Conditional probability, Dot products, Matrices and eigenvalues, Partial derivatives, Multiple integrals, Series convergence, Taylor expansion, Differential equations
From one photo to solving it again
Copying the right answer does not stick. Unknot only shows you where the solution started to go wrong and leaves the fixing to you.
- 1
Take a photo
Shoot your working exactly as you wrote it. If the problem is on another page, add it as a photo or a short note.
- 2
See the line that broke
A red box lands on the first line where the logic slips, with a one-line note on why.
- 3
Fix it yourself
The hint stays folded until you need it. Then try a twin problem that hides the same trap.
Give someone the answer and they solve one problem. Let them find the broken line and they solve the next one too.
Upload your solution now
One photo is enough. You get the spot to fix and a clue, not the answer.
Only shot your working? Add the problem too
Unknot compares your solution with what the problem asks, which makes the check more accurate. You can leave this empty.
Your report shows up here
Upload a solution and start a check to get these three things.
Red-pen note
One line on why it went wrong.
Socratic hint
Folded away. Open it only when you are stuck.
Twin problem
A new problem that hides the same trap.