Basic Mathematics for Television and Radio |
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Σελίδα 146
Thus , to continue the above problem : x - 2 = 0 70 Check x = 2 223 2 + 2 = 0 4-6 +2 - 0 = 0 0 x − 1 = 0 - Check x = 1 123.1 + 2 = 0 1 - 3 + 2 0 = = 0 0 Evidently , since both roots satisfy the equation , x may be either 2 or 1 .
Thus , to continue the above problem : x - 2 = 0 70 Check x = 2 223 2 + 2 = 0 4-6 +2 - 0 = 0 0 x − 1 = 0 - Check x = 1 123.1 + 2 = 0 1 - 3 + 2 0 = = 0 0 Evidently , since both roots satisfy the equation , x may be either 2 or 1 .
Σελίδα 147
Check for 5 52 +4.5 = 45 25 + 20 = 45 45 = 45 4 . Check for -9 ( -9 ) 2 + 4 ( -9 ) = 45 x2 + 7x = 0 x ( x + 7 ) = 0 ( x + 0 ) ( x + 7 ) = 0 x = 0 x = -7 81 Check : These values will check in the original equation .
Check for 5 52 +4.5 = 45 25 + 20 = 45 45 = 45 4 . Check for -9 ( -9 ) 2 + 4 ( -9 ) = 45 x2 + 7x = 0 x ( x + 7 ) = 0 ( x + 0 ) ( x + 7 ) = 0 x = 0 x = -7 81 Check : These values will check in the original equation .
Σελίδα 157
Rearrange : y + 64 = 20y Square both sides : y2 + 128y + 4096 = 400y Rearrange : Solve by formula : y2-272y + 4096 = y = = 0 272 ± √73984 2 27257600 2 - 16384 272240 = 2 = 16 or 256 Check : These values check in the original equation .
Rearrange : y + 64 = 20y Square both sides : y2 + 128y + 4096 = 400y Rearrange : Solve by formula : y2-272y + 4096 = y = = 0 272 ± √73984 2 27257600 2 - 16384 272240 = 2 = 16 or 256 Check : These values check in the original equation .
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Περιεχόμενα
CHAPTER PAGE 1 ADDITION SUBTRACTION MULTIPLICATION AND DIVISION IN ARITHMETIC | 3 |
DEFINITIONS AND SYMBOLS | 12 |
INVOLUTION AND EVOLUTION IN ARITHMETIC | 15 |
Πνευματικά δικαιώματα | |
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Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
algebraic angle answer applied arithmetic Axiom base called Chapter Check circle circuit circumference coefficient common complex condition Construct COROLLARY curve decimal definition denominator difference direction distance divided division Draw drawn electrical engineering equal equation example exponent expression fact factor figure formula fraction frequency functions geometry given greater illustrated inches indicated involved length letters logarithms magnitude mathematical means measure method Multiply necessary negative Note obtained ohms operation parallel perpendicular places polygon positive possible practice Problems Prove quadratic quantity quotient radio radius ratio represented resistance result right angle root rule shown sides similar Simplify sine solution Solve square statement straight line substituted subtract Theorem triangle unit unknown usually vertical voltage volts wave zero
Πληροφορίες βιβλιογραφίας
| Τίτλος | Basic Mathematics for Television and Radio Prentice-Hall technical-industrial-vocational series Technical-industrial-vocational series |
| Συγγραφέας | George Frederick Maedel |
| Έκδοση | 2 |
| Εκδότης | Prentice-Hall, 1953 |
| Πρωτότυπο από | το Πανεπιστήμιο του Μίτσιγκαν |
| Ψηφιοποιήθηκε στις | 19 Ιαν. 2007 |
| Μέγεθος | 405 σελίδες |
| Εξαγωγή αναφοράς | BiBTeX EndNote RefMan |