operations research 1

The detector rectifies the input signal. So, either the top or the bottom half of the wave is removed. A suitable filter removes the radio frequency of the rectified wave. A signal is produced which follows the envelope of one-half of the wav..

Binary Operations are as given below, Commutative Law Associative Law Let S be any non-empty set. An operation * is called a binary operation on S if " a, b Î S a * b Î SLet S be any non-empty set. An operation * is called a binar..

Equality of Matrices - Two matrices are said to be equal if they have the same order and their corresponding elements are equal. e.g., then a = 1, b = 2, c = 3, d = 4, e = 5 and f = ..

Whole numbers - read, write, count Place value (whole numbers) Rounding numbers Compose/decompose numbers Expanded notation Counting money Fractions Fractional parts of a whole Equivalent fractions Unit fractions Compare - whole numbers, fractions Time in terms of unit fractions Add/s..

Let us refer to a circuit consisting of two switches p and q connected in parallel with a lamp and battery as shown in figure. In this case, the lamp will glow if and only if at least one of the switches is closed. In binary language we say the switch will glow if at least one..

The accuracy of a result is taken to be equal to the least accurate among the numbers, when 2 or more numbers are used to add, subtract, multiply or divide. The number of significant figures in the result, is equal to the number of significant digits in the least accurate one among th..

Let us refer to a circuit consisting of two switches p and q connected in series with a lamp and battery as shown in figure. The lamp will glow, only if switch p and switch q are closed. If we replace the word 'closed' by T and 'open' by F, the switch will glow only if p = T and q = T. In binary..

Kathy buys 6 dresses. Each one costs $10.25. Which operation would you use to find the total cost? => subtraction or addition or division or multiplication..

A research scholar wants to complete the research work done by his student. In the data available with him, the class limits are missing. Find the class boundaries of each class whose midvalues are 25, 34, 43, 52, 61 and 70. => Figure 1 or Figure 3 or Figure 4 or Figur..

Tanya is a teacher. She receives a salary of $48,870 in one year. Choose an operation that would help to find her monthly salary. => multiplication or addition or division or subtraction..