### Understanding Expressions and Commands in ProgrammingAn **expression** is an instruction that evaluates to a value. For example, `x+2`, `grade > 60`, and `name[0]` are expressions as they evaluate to a number, a Boolean value, and a string, respectively.A **command** is an instruction that performs an action from which we do not expect a value to be produced; for example, `print('Hello')`.#### Which of the following functions can be used in an expression?Select one:- **a.** ```python def f(x1, y1, x2, y2): s = x1 * x2 + y1 * y2 return s ```- **b.** ```python def f(x1, y1, x2, y2): print("x1*x2+y1*y2") ```- **c.** ```python def f(x1, y1, x2, y2): s = x1 * x2 + y1 * y2 print(s) ```- **d.** ```python def f(x1, y1, x2, y2): print(x1 * x2 + y1 * y2) return ```**Explanation:**- Option **a** defines a function `f()` that takes in four parameters. It calculates the value of `s` by performing the specified arithmetic operation and then returns `s`. This function can be used in an expression because it produces a value by returning `s`.- Option **b** defines a function `f()` that prints a string representing the arithmetic expression in quotes. Since this function does not return a value, it cannot be used in an expression.- Option **c** defines a function `f()` that performs the same arithmetic operation as in option **a** and stores it in `s`, but instead of returning `s`, it prints it. Since the function does not return a value, it cannot be used in an expression.- Option **d** defines a function `f()` that prints the result of the arithmetic operation directly and then returns nothing explicitly (equivalent to returning `None`). This function cannot be used in an expression because the return value is `None`.Thus, the correct answer is:

The expression definition is pretty clear that it will execute to some value. So, let's start by…

Select one: def f(x1, yl, x2, y2): s = x1 * x2 + y1 * y2 O a. return s def f(x1, y1, х2, у2): print("x1*x2+y1*y2") Ob. def f(xl, yl, x2, y2): s %3D x1 * х2 + y1 * у2 print(s) def f(x1, yl, x2, y2): print(x1 * x2 + yl * y2) Od. return

Select one: def f(x1, yl, x2, y2): s = x1 * x2 + y1 * y2 O a. return s def f(x1, y1, х2, у2): print("x1x2+y1y2") Ob. def f(xl, yl, x2, y2): s %3D x1 * х2 + y1 * у2 print(s) def f(x1, yl, x2, y2): print(x1 * x2 + yl * y2) Od. return

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Similar questions

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write a program the computes nx and store the result into y You can use y = Math.pow( Mantissa, exponent)Requirements:Besides main() your program must have one method with two parameters, one double and one int n and x are positive numbers read from the keyboardif the user makes an entry that does not meet this criterion, the user must be given to opportunity retry the entry the user must be able to quit prior to entering values for n and x Your method must compute y and return the result to its caller; the caller will print the result After printing the result, the user must be queried again if there are other values to compute; if the answer is no exit the program, but if the user replies yes, then repeat the computation
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Q/The following mathematical operation is written in c in the form 700Po P = Po+ (700-Po)e-(T/10) p=(700*p0)/(p0+(700-p0)exp(-T/10)); Op=700*p0/(p0+(700-p0)*exp(-T/10)); p=(700*p0)/(p0+(700-p0)*e(-T/10)); There is no right choice Op=700*p0/p0+(700-p0)*exp(-T/10);
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OUTPUT MUST MATCH with the RESULT Create a program that will ask to fill in two square matrices and perform matrix multiplication. Output the resulting matrix in proper format. The maximum size of the square matrices is 10x10. Matrices 1 and 2 should have the same dimensions. TEST CASES: If a user inputs n = 2: Input: Input dimension (nxn) of the matrix, n = 2Input Matrix 1 elements: 1 2 3 4Input Matrix 2 elements: 5 6 7 8 Result: Resultant matrix: 19 22 43 50 If a user inputs n = 10: Input: Input dimension (nxn) of the matrix, n = 10 Input Matrix 1 elements: -35 54 64 31 45 -12 17 -31 -19 -78 -35 54 3 -10 -11 90 -41 31 -30 0 22 -53 21 -13 -64 32 -70 57 58 86 -77 30 73 24 -77 -90 -26 85 48 -47 -96 58 70 -59 82 -97 43 51 45 62 63 40 67 42 52 -78 -69 -91 -79 -45 35 77 -24 99 -17 0 78 31 56 -47 -97 -6 89 76 5 -100 -24 98 -46 76 -4 6 -63 64 50 -1 23 60 13 -13 77 -42 62 45 -82 -35 93 97 11 92 Input Matrix 2…
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