2nd Edition

ISBN: 9781323178522

Author: Briggs

Publisher: PEARSON

See similar textbooks

Videos

Textbook Question

Chapter 14.1, Problem 28E

Gradient fields Find the gradient field F = ▿ϕ for the potential function ϕ. Sketch a few level curves of ϕ and a few vectors of F.

28. φ ( x , y ) = 2 x y , for | x | ≤ 2 , | y | ≤ 2

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Chapter 14.1, Problem 27E

Chapter 14.1, Problem 29E

Students have asked these similar questions

Match each of the assembler routines on the left with the equivalent C function on the right. Write the name of the label (e.g., foo) to the right of the corresponding function. Note: shrq is the logical right shift instruction, and sarq is the arithmetic right shift instruction. foo1: leaq 0(,%rdi, 8), %rax long choice1 (long x) { ret return x - 8 >8; foo3: } movq sarq %rdi, %rax $8, %rax long choice4 (long x) ret { return x*256; } foo4: long choice5 (long x) leaq -8 (%rdi), %rax { ret return x-8; } long choice6 (long x) foo5: { leaq -8 (%rdi), %rax return x+8; shrq $63, %rax } ret

Given the variables and code in the text below, identify where in memory they will live once the code is compiled. 1 char big_array [1L<<24]; /* 16 MB */ 2 GB * :/ 2 char huge_array [1L<<31]; /* 3 4 int global = 0; 5 6 int useless () { return 0; } 7 8 int main() 9 { 10 void *p1, p2, *p3, *p4; int local = 0; malloc (1L << 28); /* 256 MB *, 11 12 p1 13 p2 = malloc (1L << 8); /* 256 B * 14 p3 15 p4 = malloc (1L << 32); malloc (1L << 8); /* 4 GB * */ /* 256 B */ 16 } Note: *pN is the thing at which pN points. 1. big_array 2. huge_array 3. global 4. useless 5. void* p1 6. *p1 7. void* p2 8. *p2 9. void* p3 10. *p3 11. void* p4 12. *p4

The next problem concerns the following C code: /copy input string x to buf */ void foo (char *x) { char buf [8]; strcpy((char *) buf, x); } void callfoo() { } foo("ZYXWVUTSRQPONMLKJIHGFEDCBA"); Here is the corresponding machine code on a Linux/x86 machine: 0000000000400530 : 400530: 48 83 ec 18 sub $0x18,%rsp 400534: 48 89 fe mov %rdi, %rsi 400537: 48 89 e7 mov %rsp,%rdi 40053a: e8 di fe ff ff callq 400410 40053f: 48 83 c4 18 add $0x18,%rsp 400543: c3 retq 400544: 0000000000400544 : 48 83 ec 08 sub $0x8,%rsp 400548: bf 00 06 40 00 mov $0x400600,%edi 40054d: e8 de ff ff ff callq 400530 400552: 48 83 c4 08 add $0x8,%rsp 400556: c3 This problem tests your understanding of the program stack. Here are some notes to help you work the problem: ⚫ strcpy(char *dst, char *src) copies the string at address src (including the terminating '\0' character) to address dst. It does not check the size of the destination buffer. • You will need to know the hex values of the following characters:

Chapter 14 Solutions

CODE/CALC ET 3-HOLE

Ch. 14.1 - How is a vector field F = f, g, h used to describe...Ch. 14.1 - Sketch the vector field F = x, y.Ch. 14.1 - Prob. 3E Ch. 14.1 - Prob. 4E Ch. 14.1 - Interpret the gradient field of the temperature...Ch. 14.1 - Two-dimensional vector fields Sketch the following...Ch. 14.1 - Two-dimensional vector fields Sketch the following...Ch. 14.1 - Two-dimensional vector fields Sketch the following...Ch. 14.1 - Two-dimensional vector fields Sketch the following...Ch. 14.1 - Two-dimensional vector fields Sketch the following...

Additional Engineering Textbook Solutions

Find more solutions based on key concepts

For each hour of class time, how many hours outside of class are recommended for studying and doing homework?

Elementary Algebra For College Students (10th Edition)

True or False The quotient of two polynomial expressions is a rational expression, (p. A35)

Precalculus

The largest polynomial that divides evenly into a list of polynomials is called the _______.

Elementary & Intermediate Algebra

Find all solutions of each equation in the interval .

Precalculus: A Unit Circle Approach (3rd Edition)

First Derivative Test a. Locale the critical points of f. b. Use the First Derivative Test to locale the local ...

Calculus: Early Transcendentals (2nd Edition)

(a) Make a stem-and-leaf plot for these 24 observations on the number of customers who used a down-town CitiBan...

APPLIED STAT.IN BUS.+ECONOMICS

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.

Gradient fields Find the gradient field F = ▿ϕ for the potential function ϕ. Sketch a few level curves of ϕ and a few vectors of F . 28. φ ( x , y ) = 2 x y , for | x | ≤ 2 , | y | ≤ 2

Solution Summary: The author explains how the gradient field for the potential function phi (x,y)=2xy is computed. The vector field is directed outward away from the origin in I and III quadrant.

Videos

Want to see the full answer?

Chapter 14 Solutions

Additional Engineering Textbook Solutions