Sketch Definition and 179 Threads

In looking at a thread that was rejected because, well, it was rubbish, it reminded me of a famous sketch: If you haven't seen it before, enjoy it. Thanks Bill

The pH stays the same because the optimum pH of trypsin is around pH 7.5. I think??

Sketch by hand the function determined as f(x) = 1/28 (7√−16x^2 + 16x + 5 + 12) and then From the sketch, determine the domain and range of f in interval notation. Hint: Interpret f as part of a circle. You must include in your solutions the inputs and outputs you used to help you sketch the...

Here's my work: Could someone please confirm my answer?

Let's say you have a material element with normal and shear stress. These stresses were computed using stress transformation. When the material deforms, should the normal stress vectors remain normal to the surface (sketch 1) or parallel to the other surface (sketch 2)? Which would be more...

Sketch a qualitatively accurate graph of the entropy of a substance as a function of temperature, at fixed pressure. Indicate where the substance is solid, liquid, and gas . Explain each feature of the graph briefly. What you think about?: dU = -P*dV + Q*dS (1) V = C*T => dV = C*dT Nfk*dT/2 +...

Let ABCD be a parallelogram with acute angle at A. Let E be the foot of the perpendicular from C to the line AB and let F be the foot of the perpendicular from C to the line AD.

This is my sketch: I think the only possible way to get emergent beam perpendicular to AB is when the incoming ray is refracted towards side AC then total internal reflection occurs as shown in my sketch. Angle QAR = 60o and angle ARQ = 90o so angle AQR = 30o It means angle CQP is also 30o...

Someone told me to use parametric equations to find symmetries first but are there other methods to sketch this graph? How do you think

I'm going to return to college starting Fall, 2019 as a physics major. In preparation, I've been going though various textbooks, studying the material and working the problems. The concepts I understand reasonably well. The problem? I'm horrible at drawing. I see some problems, especially in...

Homework Statement A man walks 120m [S 23 E] Then turns and walks 60m [S 10 N] draw a careful sketch of this situation and then solve for the displacement, you do not have to solve for the direction 2. Relevant equation: Cosine law The Attempt at a Solution Solution attempt is attached as a...

Homework Statement Sketch, on a set of common axes, waveforms to represent the transient response of circuits having transfer functions with the following parameters: a) ζ = 0.5, ω = 1×10^3 rad s^-1 b) ζ = 0.2, ω = 2×10^3 rad s^-1 c) ζ = 2, ω = 1×10^3 rad s^-1 Homework Equations wd=wo√(1-ζ^2)...

Homework Statement I would like to ask about parts c) and d) , the graph sketching bits. 2. Homework Equations ##V(r) = ( \frac{J^2}{r^2}+\epsilon)(r-\frac{1}{r}) ## where the value of ## \epsilon ## is set according to whether time-like or null etc. The Attempt at a Solution Q1)for...

Homework Statement {(x,y) ∈ ℝ^2 : (y-x)(y+x) = 0 } Homework EquationsThe Attempt at a Solution [/B] Is the reason the answer is the union of y = -x and y = x because if you divide (y-x)(y+x) = 0 by y-x you get y = -x and if you divide (y-x)(y+x) = 0 by y+x you get y = x? and if you...

I don't really know how to start with this question. Please help? For the function g: [0,5] \implies R, g(x)=(x+3)/(2) (R=Real Numbers) sketch the graph of y=g(x) I don't know how the [0,5] \implies R changes the graph.

Homework Statement :[/B] Sketch in an argand diagram: |z − i| = 2 Homework Equations z= a+bi The Attempt at a Solution |z − i| means that the distance from z to i is 2, however I am not sure where to put z.

$\textsf{a. Sketch the region of integration and evaluate.}\\$ \begin{align*}\displaystyle \int_{6}^{\frac{\pi}{6}} \int_{0}^{\sec{\theta}} 6r^{3} drd\theta\\ W|A=\frac{5}{3\sqrt{3}} \end{align*} OK I really didn't know how to do this in desmos

I am trying to sketch the electric field E in snapshot of a linearly polarized laser beam. Is it correct that the E vectors bend from vertical to longitudinal near the cylindrical surface of the beam, and that all field lines within a half wave segment are closed loops?

Homework Statement Sketch the surface of a paraboloid z=9-x2 -92 in 3-dimensional xyz-space Homework Equations I assume partial derivatives are involved in some manner The Attempt at a Solution [/B] I attempted to solve by making each variable equal to zero... That didn't work xD. I would...

Homework Statement Hi guys, I would like some pointers on how to do this type of question. My sketch was correct but, I want to just check my method on how I came up with the solution. Also if anyone has any other ways, on tackling these problems, advice would be great.Homework Equations...

Homework Statement There is an object and I should do the sketch. Did I draw it correctly?Homework EquationsThe Attempt at a Solution https://postimg.org/image/lhl7x7t33/ https://postimg.org/image/6mwmj1ji7/

Any thoughts on the sketch? (Party) Many Thanks :)

I've just had my first batch of lectures on complex numbers (a very new idea to me). Algebraic operations and the idea behind conjugates are straightforward enough, as these seem to boil down to vectors. My problem is sketching. I have trouble defining the real and imaginary parts, and I don't...

Homework Statement Suppose we have f(x,y) = ∑(x/y)^n , n goes from 0 to infinity. What is the domain on the xy plane? Sketch it. 3. Attempt I was thinking to look at the scenario if x/y is less than 1, or bigger than 1. If the ratio is less than 1, then I can use an idea from geometric series...

This is a rough sketch, (Happy) Now apart from constructing the triangle can you help me to located the point D & Obtain the location of point E on side AB such that ACDE is a trapezium ,only using an straight edge and a compass. (Crying)

Homework Statement http://www.physics.ox.ac.uk/olympiad/Downloads/PastPapers/BPhO_Paper3_2004_QP.pdf question 3. Should i post a picture of it if its more appropriate ? Note: I'm expected to do this in about an hour [Mentor note: Image of the relevant portion of Q3 inserted] Homework...

Homework Statement Homework Equations none The Attempt at a Solution -amplitude is 3 -period is 180° -right 60° -down 1 Rough sketch of graph: I would like to know if the graph looks right, is there any improvements to be made? Thanks :)

Homework Statement the line above shows the energy line of the flowing fluid , whereas the line below shows the hydraulic geade line of flowing fluid , the diffrence between 2 lines is velocity head Homework EquationsThe Attempt at a Solution i have 2 pictures here , the author drew 2...

Homework Statement ƒ(x,y) = √y + √[25-x2-y2] Homework Equations Quadratic The Attempt at a Solution The expression for f(x,y) is defined as long as x2 + y2 ≥ 25 and y ≥ 0 because of the square roots we can't have negative numbers. {(x,y) ∈ ℝ2 : y ≥ 0 and x2 + y2 ≥ 25} I'm not sure how I'd...

Homework Statement Sketch output respons of system who have a input is a unit step (Amplitude of the system = 1)Homework Equations · Damping factor = 0,5 · Gain factor = 2 · Natural angular frequency = 4 Rad/sThe Attempt at a SolutionI have: 1. Draw a step respons in a x-y axis 2. And...

I've been wondering, space time is supposed to be consists of one dimensional string as described in the string theory, but how exactly does space time looks like since it is invisible to us. Is it possible to get a sketch of such one dimensional strings?

Homework Statement Find the Fourier series defined in the interval (-π,π) and sketch its sum over several periods. i) f(x) = 0 (-π < x < 1/2π) f(x) = 1 (1/2π < x < π) 2. Homework Equations ao/2 + ∑(ancos(nx) + bnsin(nx)) a0= 1/π∫f(x)dx an = 1/π ∫f(x)cos(nx) dx bn = 1/π ∫f(x) sin(nx) The...

Homework Statement A 1D wave function ψ(x,t) satisfies these initial conditions: ψ(x,0) = 0 for all x ∂ψ/∂t (x,0) is v for -a≤x≤a 0 otherwise Plot ψ(x,t) as a function of x at time t=a/v. Homework EquationsThe Attempt at a Solution I know the 1D wave equation is given by...

Sketch the curve with the given polar equation. θ = −pi/6? I know for certain that its a straight line that passes through the origin but what I'm not sure is if its like this \ or like this /

Homework Statement (with s i mean what many people know as "x" also known as "distance"[/B] IF this v-t diagram was given (Just made up in my head) , how would i sketch a s-t diagram? Since the s-t diagram would be a second grade polynomia, for instance between t=0 and t=5 the area under the...

Homework Statement 9x2 − 18x + 4z2− 24z − y2 + 45 = 0 Homework EquationsThe Attempt at a Solution so let's start with the zy trace, setting x=0 we are left with: 4z2 - 24z - y2 = -45 completeing the square gives : 4z2 - 24z + 144 - y2 = -45 +144 4(z-12)2 - y2 = 99 divide both sides by 99...

Homework Statement Sketch the region defined by: y ≤ x^2 and 4 ≥ y ≥ 0 and y ≥ 2x − 4. Evaluate the area defined by the above inequalities. Homework EquationsThe Attempt at a Solution I have already plotted the positive part and found the area. However, the negative part seems to be infinite...

Homework Statement \frac{0.5}{1 - \frac{3145j}{w}} , sketch the bode plot Homework EquationsThe Attempt at a Solution Moving the jw to the bottom \frac{0.5}{1+ \frac{3145}{jw}} Let s = jw \frac{0.5}{1+ \frac{3145}{s}} = \frac{0.5}{\frac{s+3145}{s}} = (0.5) \frac{s}{s+3145} =...

I been googling videos and notes regarding the sketching of geometric figures, such as: planes, solids, 3rd/ 2d geometric shapes. Could not find decent resources. The reason i ask is that I am having a hard time picturing certain problems with my mediocre drawing skills and I also tutor so it...

Homework Statement I've been asked to sketch and mathematically represent the pdf of 2 signals: (a) rep2T{5 rect(t/T) - rect((t-T)/T)} (b) rep2T{2 rect(t/T) + 4Arect(2t/T)} A(t) is the lambda function A(t) = 1- t for 0 <= t <= 1 1+t for -1 <= t <= 0 Any help would be much...

Homework Statement I need to be able to sketch Nyquist diagrams for transfer functions. I spent a lot of time but I cannot wrap my head around the idea of mapping the GH(jw) in the complex plane. Let's consider the following example for this question: GH(s) = \frac{4} {s(s+2)^2} 2. The attempt...

https://scontent-sjc.xx.fbcdn.net/hphotos-xpt1/v/t34.0-12/11160576_1059930500703784_4106088481400641257_n.jpg?oh=2e1906c36fc3e407fc8e2b8eb544bbba&oe=55401DBB 1. Well the entirety of the question along with the variables is given within the picture ^.2. I can't figure out how to make the graph...

Homework Statement [/B]A wave is represented by the wave function: y = A cos(2πx/λ + π/3) for x < 0. For x > 0, the wavelength is λ/2. By applying continuity conditions at x = 0, find the amplitude (in terms of A) and phase of the wave in the region x > 0. Sketch the wave, showing both x < 0...

Hi! I'm having troubles drawing a velocity-time graph from a position-time graph. I know parabolic p-t graphs have diagonal lines for their v-t graphs, but I'm not sure why. I also know tangents are important to use, but again, I don't understand why. Any clarification as to why this happens (in...

$\textbf{Problem:}$ Let $T: \mathbb{R}^2 \rightarrow \mathbb{R}^2$ be the linear transformation that reflects each point through the $x_2$ axis. Make two sketches that illustrate properties of linear transformation. $\textbf{Solution:}$ Let $T(\textbf{x}) = \begin{bmatrix} -1 & 0 \\ 0 & 1...

Homework Statement Sketch the waveform defined below and explain how you would obtain its Fourier series: f(wt) = 0 for 0 ≤wt ≤pi/2 (w=omega) f(wt) = Vsin(wt) for pi/2 ≤wt ≤pi f(wt) = 0 for pi ≤wt ≤3pi/2 f(wt) = Vsin(wt) for 3pi/2 ≤wt ≤2pi Develop the analysis as far as you are...

Hello everyone! I need your help with the next sketch: I need to find the angle between the red line and the horizontal ($\alpha$). I did try everything that i could imagine but even so i couldn't find it. According to the book, the angle should be: $\alpha=20~degrees$ How can i calculate it?

Hey guys, I'm trying to wrap my head around this electronic schematics of a PLC, because I've started ladder-programming it. Can anyone explain to me why are there TWO diodes before the transistor? I get that one diode shows an "active" or "inactive" state when it's turned on or not. But why...

Sketch the region in the plane consisting of all points (x, y) such that $|x-y|+|x|-|y| \le 2$. This looks like it involves the triangle inequality, but can anyone point me in the right direction? :D