Information about directional derivatives

Assignment Help Mathematics
Reference no: EM13128340

Consider the function f(x,y,z) = (e^z)ln(x^2 + y^2)

a) Is there a vector r such that the directional derivative of f at (1,1,0) in the direction of r equals 1? If there is, find one such vector. If not, explain why not.

b) Is there a vector r such the directional derivative of f at (1,1,0) in the direction of r equals to -2? If there is, find one such vector. If not, explain why not.

Reference no: EM13128340

Questions Cloud

What is it''s reaction, single, or double replacement : What is the balanced equation for copper (II) hydroxide + acetic acid (HC2H3O2)? and what is it's reaction, single, or double replacement.
Partial differentiation and chain rule : The problem states: Find dw/dt (a) using the appropriate chain rule and (b) by converting w to a function of t before differentiating.
Illustrate what is the lowest price per unit backwoods : A large hotel chain is currently expanding and has decided to decorate all new hotels using the rustic style. Backwoods Incorporated is invited to submit a bid to the hotel chain. Illustrate what is the lowest price per unit Backwoods should bid o..
Find how small must standard deviation be : If the manufacturer wants to keep the mean at 12.8 ounces but adjust the standard deviation so that only 2% of the bags weigh less than 12 ounces, how small must that standard deviation be?
Information about directional derivatives : Is there a vector r such that the directional derivative of f at (1,1,0) in the direction of r equals 1? If there is, find one such vector. If not, explain why not.
The garden party : To what extent does "The Garden Party" appear to embody feminist values?
What is the molecular formula of chloral hydrate : Chloral hydrate, a sedative, contains C 14.52%, H 1.83%, Cl 64.30%, and O 19.35%. If it has a molar mass of 165.42 g, what is the molecular formula of chloral hydrate?
How operating income be affected : If Hoffman accepts the special order, the company would not have to pay its salespeople their normal commission of $2 per unit, but the company would incur a shipping cost of $3 per unit on the items in the special order. If Hoffman accepts the sp..
Interest and applications of derivatives : A person's fortune increases at a rate to the square of they're present wealth. If the person had one million dollars a year ago and has two million today then how much will the person be worth in six months?

Reviews

Write a Review

Mathematics Questions & Answers

  Differences between functions and linear equations

What similarities and differences do you see between functions and linear equations? Are all linear equations functions? Is there an instance when a linear equation is not a function?

  Row echelon form and number of solutions

If a system of m linear equations in four unknowns has a unique solution, then m must be greater than or equal to four. If a system of m linear equations in four unknowns has no solutions, then m must be greater than or equal to four.

  Estimating linear inequality

Explain why a point on the boundary line cannot be used as a test point when graphing a linear inequality in two variables. Provide an example.

  Determine stem and leaf plot for oil usage

The table below shows the number of gallons of heating oil delivered to a residential customer each December from 1986 to 1993.

  Review chi square analysis

Review Chi Square analysis & create an example of how you would use the tool to help make a business decision.

  Graph of swimming fish energy

For a fish swimming at a speed v relative to the water, the energy expenditure per unit time is proportional to v^3. It is believed that migrating fish try to minimize the total energy required to swim a fixed distance.

  Determining square roots of matrix

Let A be a positive definite matrix. Show that X has a unique positive square root. That is, show that there exists a unique positive matrix X such that X^2 =A.

  The law of cosines and pythagoras theorem

The law of cosines and Pythagoras theorem.

  Draw circuits for following boolean expressions

For this module you will design some simple digital circuits based on Boolean expressions. Draw circuits that implement the following Boolean expressions using some combination of AND, OR, NOT, NAND, and NOR gates.

  Problem solving on population mean

Problem solving on population mean

  Graphical solution of linear equations

For solving a system of equations, is there a difference between using an algebraic method and using the graphical method? Explain why or why not

  The bay city police department has eight patrol cars

The solution to Queuing Analysis. The Bay City Police Department has eight patrol cars that are on constant call 24 hours a day. A patrol car requires repairs every 20 days, on average, according to an exponential distribution

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd