62 CEDARVILLE COLLEGE 330 SPHERICAL TRIGONOMETRY Development of formulas concerning triangles and other polygons on the sur– face of a sphere. Prerequisite: Math 130. Two hours credit. 340 THEORY OF EQUATIONS Algebraic solution of cubic, quartic, and higher equations; approximate deter– mination of roots by Homer's and Newton's methods. Prerequisite: Math 212. Three hours credit. 410 ADVANCED CALCULUS Advanced theories and calculations in different and integral calculus; especially useful for majors in mathematics, physical sciences, and engineering. Prerequisite: Math 212. Three hours credit. 420 DIFFERENTIAL EQUATIONS Linear, second order, exact, and partial differential equations and their applica– tions. Prerequisite: Math 212. Three hours credit. MECHANICAL DRAWING 101-102 MECHANICAL DRAWING Mechanical drawing and descriptive geometry. Instruction is largely individual. Elective. Two hours credit each semester. Not given every year. MUSIC 51 CHILDREN1 S PIANO CLASSES High school or grade pupils will be accepted individually if they are advanced, or in classes if beginners. Sufficient practice and steady progress are factors in granting credit. One 30 minute lesson per week. One hour credit. 110-111 PIANO The study of the piano is the natural foundation for a thorough musical culture. Scales, studies, and pieces will be required and faithfulness in practicing as well as steady progress from whatever level the student begins will be considered before credit is granted. One 30-minute lesson per week. One-half hour credit. 120-121 Vo1cE CLASS A good singing voice is gained by developing smooth resonant tones, control of breath, rhythm, phrasing, and diction. A textbook is studied and in the lesson vocalises and pieces of standard repertoire are required. No credit is given with– out faithful practice and steady progress in the knowledge and use of the natural voice. Beginners are accepted in classes. One 30-minute lesson per week. One– half hour credit. (All four years).
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