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1029 a. f (x) = x 2 – 2x. 1029 a. f( x ) = x 2 – 2 x f ( 3 + h ) = ( 3 + h ) 2 -2( 3 + h ) f (3+h) = (9+6h+h 2 ) – 6 – 2h f (3+h) = 3+4h+h 2. 1029 a. f(3+h) = 3+4h+h 2 f(3) = 3 2 – 2.3 f (3) = 3 f(3+h) – f(3) = h 2 + 4h So.
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