Basic Mathematics for Television and Radio |
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Σελίδα 42
In radio work we may desire only the mag- nitude of a current , for example 4 amperes ; or we may want both the magnitude and direction , for example -4 amperes or +4 amperes . When no sign stands before a number , the plus sign is ...
In radio work we may desire only the mag- nitude of a current , for example 4 amperes ; or we may want both the magnitude and direction , for example -4 amperes or +4 amperes . When no sign stands before a number , the plus sign is ...
Σελίδα 43
The sum of ( -2 ) + ( - 3 ) is found by counting from ( -2 ) three units in the negative direction , and is ( -5 ) . 5. Or , if a and b represent any two numbers , we have ( + a ) + ( + b ) = a + b ( + a ) + ( - b ) = a - b ( -a ) + ( + ...
The sum of ( -2 ) + ( - 3 ) is found by counting from ( -2 ) three units in the negative direction , and is ( -5 ) . 5. Or , if a and b represent any two numbers , we have ( + a ) + ( + b ) = a + b ( + a ) + ( - b ) = a - b ( -a ) + ( + ...
Σελίδα 44
direction opposite to that indicated by the sign of the subtrahend , as many units as there are in the absolute value of the subtrahend ( see Fig . 8-3 ) . EXAMPLES 1. The result of subtracting ( +1 ) from ( +3 ) is found by counting ...
direction opposite to that indicated by the sign of the subtrahend , as many units as there are in the absolute value of the subtrahend ( see Fig . 8-3 ) . EXAMPLES 1. The result of subtracting ( +1 ) from ( +3 ) is found by counting ...
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CHAPTER PAGE 1 ADDITION SUBTRACTION MULTIPLICATION AND DIVISION IN ARITHMETIC | 3 |
DEFINITIONS AND SYMBOLS | 12 |
INVOLUTION AND EVOLUTION IN ARITHMETIC | 15 |
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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