40 fully worked modulus (absolute value) questions for OCR A A-Level Mathematics (H240), every line explained and annotated to the real OCR M/A/B/SC mark scheme. Covers sketching y=|f(x)|, solving ...
25 progressive Edexcel A-Level (9MA0) modulus equations and inequalities questions with full mark-scheme style worked solutions. Hard: harder modulus inequalities, combining two modulus terms, and ...
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