—500 pages of functions, logarithms, and trigonometry that stood between him and summer break. He flipped to the back, searching for the odd-numbered answers
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Curious, Leo flipped back. There, in faint pencil, someone had sketched out a shortcut for sine and cosine transformations —500 pages of functions, logarithms, and trigonometry that
The heavy, midnight-blue textbook sat on Leo’s desk like a challenge. Glencoe Precalculus —500 pages of functions
