Differentiate y =
y = 3x²index slip — is x⁻²
= 6xpower rule
The calculus was right. The slip came before it.
Not just wrong.
Exactly why.
Marks every handwritten step. Finds the real gap.
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01 · Marking
Every step, marked.
Photograph your paper. Every line, checked.
Paper in. Insight out.
02 · Diagnosis
The real gap. Found.
DifferentiationIndex lawsNegative indices
The real gap: negative indices, not differentiation.
03 · Your curriculum
Your syllabus.
Not someone else's.
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04 · Progress
Watch weakness close.
Every skill, lit up.
StuckLearningMastered
Four a day. That's it.
4 today
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The same marked working. Not just a grade.
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