| − | '''Transcendental functions''' are special [[function]]s used by [[mathematician]]s and [[engineer]]s, such as [[trigonometric function|trigonometric]] and [[logarithm]]ic functions, whose values cannot be worked out from a simple [[algebraic]] expression - they can only be worked out from an [[infinite series]] - they transcend [[algebra]].<ref>[http://www.vintagecalculators.com/html/the_hp-35_calculator.html] Solving for transcendental functions with [[calculator]]s</ref>
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