Range Definition and 979 Threads

my question is on part ii, my range ( as shown in the photo), is between 4.52 and 16.28, so my working would be (6+10+4+4)/(6+10+4+4+1) X100% ... the answer given is 72% which is differnt form my answer? which part of my working is wrong ?

If a person's birthday is in January, what are the odds that it is between the 20th and the 29th, inconclusively? A. 10/31 B. 8/21 C. 21/31 H. 10/21 Thanks(Sun)

i need to calculate what percentage of the energy put into a X-ray tube will be between the minimum wavelength and the longest wavelength suitable for it's application (as to calculate how efficiently it does it's job) with only the input voltage (unless the anode material is important) the...

Homework Statement A 24" diameter titanium jet engine disk is machined to tolerance or +/- 0.002". Customer will accept +/- 0.003". The part is machined and measured in you plant at 80F. What is the max temp range for the customer to measure the part which you should specify in the contract...

Okay, So I have attached a screenshot of my two graphs of a particle shot from a cannon. The blue one has had an air resistance constant of 0.1 applied to it and, as you can see, has 'shrunk'. For the particular question I am investigating a range of answers are plausible ( ie the x-intercepts...

f(x,y) = ln(9 - x2 - y2) Domain I got: (x, y) in R2 such that x2 + y2 < 9 How do I find the range from the domain? Wouldn't it be all positive numbers of ln such that it is less than ln(9)? Answer says less than or equal to 9, I don't get why. Any input is appreciated!

Homework Statement Let f:[0,1]→R be a function. Suppose the function f is twice differentiable, f(0)=f(1)=0 and satisfies f"(x)-2f'(x)+f(x)≥e^x, x:[0,1]. Then find range of f(x). The Attempt at a Solution Strictly speaking, this has been one of the toughest problems I've ever encountered...

How can we determine the ranges of strong interactions and weak interactions? Can calculations of relevant scattering cross sections do this? Thanks.

Homework Statement Explain qualitatively how it is possible for the projectiles to have the same range despite having different launch angles Homework Equations x = voxt The Attempt at a Solution A projectile's range is determined by its x component of the initial velocity and the...

Mod note: The OP has found an answer to his question.[/color] I am validating a text field in javascript in EXTJS 4 framework, based on the selected value of a text box: else if (record.get("type") === "CELL_VALUE" && record.get("apply_before") === true) { Ext.Msg.alert("Field...

Homework Statement a) f(x,y)=√ [1−(x2+y2)] b) f(x,y)=2cos(4x+y2) The Attempt at a Solution a) The domain is such that x2 + y2 must not be greater than 1 In other words, this is expressed (as stated as an option on the answer sheet) as "xy-plane without the line x=y" Why is this...

Hi Folks, Have a task , but no idea how to resolve. Will appreciate any help. Consider the function f: {5,6,7} →{A,B,C} given by f(5)=A, f(6)=C, and f(7)=B Draw its arrow diagram and state its domain, codomain and range. Is it (i) onto and (ii) one-to-one ? Explain. Does it have...

Mod note: fixed an exponent (% --> 5) on the transformation definition.[/color] Homework Statement A is a (4x5)-matrix over R, and L_A:R^5 --> R^4 is a linear transformation defined by L_a(x)=Ax. Find the basis for the range of L_A. Homework Equations The Attempt at a Solution ##A =...

$\triangle ABC ,\,\, given :$ (1) sum of its two angles=$n^o$ (2) if $\alpha$ is the largest angle and $\gamma $ is the smallest angle ,we have :$\alpha - \gamma =24^o$ please find the range of $n$

i am middle of engg project . to make an automatic irrigation system ,using plc , main problem is humidity sensor which i am using gives out put of 0-5 volt but plc require more output for better results,...can anyone suggest a voltage amplifier or any circuit using op amp

Homework Statement ##\begin{bmatrix}1 & 1 & -1 & -1 \\1 & 2 & 0 & 1 \\-1 & 1 & 3 & 5 \\2 & 3 & -1 & 0\end{bmatrix}## a) Determine the range of L_A Homework Equations None The Attempt at a Solution The row-reduced matrix is as follows ##\begin{bmatrix}1 & 0 & -2 & -3 \\0 & 1 & 1 & 2 \\0 & 0 &...

Homework Statement The gravitational attraction due to a nearby mountain range might be expected to cause a plumb bob to hang at an angle slightly different from the vertical. If a mountain range could be represented by an infinite half-cylinder of radius a and density ρ lying on a flat plane...

Homework Statement My problem consists of two parts, the first being how far from the top of a cliff will a projectile (fired from a cannon) land with a velocity of 120 ms^-1, fired horizontally from cliff height of 150m. The second part is where I am struggling, the cannon is now aimed 45°...

Homework Statement At what projection angle will the range of a projectile equal its maximum height? Homework Equations Big 5 vf2= vi2 + 2ad The Attempt at a Solution So I attempted to solve this question by randomly subbing in equations into each other. If i draw out a diagram to solve...

Homework Statement See attached image Homework Equations they are provided in the image. I see the domain is used The Attempt at a Solution I can't figure out how they went from step one to step 2. where does the -81 come from and the 9 multiplied to the function in the middle. I...

The original problem has very confusing wording without the picture so I reworded it for simplicity: A toy cannon is placed on a ramp on a hill, pointing up the hill. With respect to the x-axis the hill has a slope of angle A and the ramp has a slope of angle B. If the cannonball has a muzzle...

I am currently taking Calc III as an online course (yes, big mistake). I am at a section where we are evaluating the domains and ranges for functions with both x and y variables in it. As far as finding domains, no problem. However, the textbook doesn't explain how to solve for ranges...

Homework Statement Use a graphing calculator to find \delta when 0<|x - \pi/2|<\delta and |sin(x) - 1|<0.2 Homework Equations I don't think there are any other than the format of the previous information: 0<|x-a|<\delta and |f(x)-L|<\epsilon The Attempt at a Solution Okay...

Homework Statement Given the transmitting power of 0.1 mW and received noise of -100 dBm. Consider a signal which needs a SNR of 30 dB. Calculate the range for a signal of 0.5 MHz given that the damping for the signal is calculated as: L = 10 +8.0*f [dB/km] where f is the...

Homework Statement Find the range of uniform convergence for the following series η(x) = ∑(-1)n-1/nx ζ(x) = ∑1/nx with n ranging from n=1 to n=∞ for both Homework Equations To be honest I'm stumped with where to begin altogether. In my text, I'm given the criteria for uniform...

Homework Statement A projectile launched at angle Θ to the horizontal reaches maximum height h. Show that its horizontal range is 4h/ tan Θ.The Attempt at a Solution tapex = vi sin Θ/g tfull trajectory = 2vi sin Θ/g h(tapex) = h = vi^2 sin^2 Θ/2g x(tfull trajectory) = x = \frac{vi^2 sin (2Θ)}{g}

Homework Statement Show that, for a given initial speed, te horizontal range of a projectile is the same for launch angles 45° +\alpha and 45° - \alpha The Attempt at a Solution x1 = vi cos (45° + \alpha) x2 = vi cos (45° - \alpha) tcomplete trajectory = 2 vi...

hello guys could anybody tell me the method of finding the range of a rocket launched from height h, the rocket of course is under three forces weight,drag and thrust

Running a computer script (included below) I was testing to see how long it would take to match two numbers when selected at random from within a range. To my surprise the percentage of possibilities explored before finding a correct answer decreased as i raised the range. Is this correct? It...

It is not being explained anywhere in my book nor on the internet. Can someone explain to me why?

Homework Statement After a short engine firiing, an atmosphere-probing rocket reaches 4.6km/s. If the rocket must land within 50km of its launc site, what's the max allowable deviation from a vertical trajectory. Homework Equations none The Attempt at a Solution Given by the...

Hello, How can i plot some data points in gnuplot and in the same plot a function, for example f(x)=0.2*x**(-0.6) plot [0:6] "data.dat" with errorbars, [0:2] f(x)

Hello all... I know that it can be derived, from first principles, that maximum endurance and maximum range speeds are related by the factor 3^0,25. But I haven't been able to find a derivation. Could anyone here help...? Thanks in advance...

Homework Statement A dog jumps a distance, L, and a maximum height, H, where the dog only has horizontal velocity when it travels through the hoop. What is the speed of your dog when he leaves the ground? What is the speed of your dog when he goes through the loop? Both answers should NOT...

≤What's the differnece between codomain and range? Is the range a subset of the codomain? And the codomain basically contains all possible values or elements the set R (Range) can contain? For example: Let f(x) = x + 1 be a function from the set of real numbers (0≤x≤4) to the set of...

I found a nice applet: http://www.kcvs.ca/site/projects/physics.html to study that formula, but it has a limited range. Do you know of a better app or of a site where I can get results of real experiments?, can someone tell me: - does it work at all frequencies, or does it break down somewhere...

Homework Statement I don't need to give any information, I just need to know the best way to calculate E from a range of values for load and displacement given the length and diameter. I've calculate it for a few values and the value appears to decrease so I'm not sure where to take the value...

Homework Statement Homework Equations =̿+2̅, =̿−2 =4̅, =3̅ The Attempt at a Solution From what I gather, we can use the sample range, which is the max minus the min, or the average moving range which is the sum of the preceding value minus the current value divided by the...

Hello, I have an array of length M. Some of the indices are non-negative. I need to derive a function/analytic expression (preferably linear or convex) that finds the span of indices for which the indices are non-negative. Example: Let p denote the desired vector. Let, p = [0 0 0.3 2.6...

Homework Statement A number of accidents have occurred on site as a result if the discharge of static electricity generated by the flow of fluids. You have been asked to review enhanced safety during an acetone drum filling operation. Your engineering manager has asked you to gather some...

Homework Statement Solve cos(3θ) = 0.85 in the range 0 ≤ θ ≤ 360° Homework Equations The Attempt at a Solution cos(3θ) = 0.85 3θ = 31.79° θ = 10.6° (3 s.f) I have drawn my transformed cos curve, where the full wave completes after 120°, so there are 3 full cycles in my...

Homework Statement A launcher fires a ball that weighs 30kg straight up to a height of 300m. What is the maximum range of the ball could be fired at? Homework Equations V^2 = V^2-2(a)(d) R = ( V02 Sin2θ ) / gThe Attempt at a Solution To find the maximum range i know that it has to be...

I am preparing a document for my co-workers re. metal & the effect that it has on rf (spec. Wi-Fi in the 2.4 GHz range of the spectrum). Could you please check for accuracy & edit as necessary? It is as follows: "Metal – metal can attenuate & reflect Wi-Fi. Placing an antenna in a metal box...

Homework Statement Today my teacher asked me "What are the best 2 angles to use when wanting to get maximum horizontal distance while on an elevated surface of 50m." As in Dx. What would these 2 angles have to be for the projectile to go the furthest distance horizontally and what would the...

Homework Statement find the range of values for s: f(t)=e^(-t/2)u(t)Homework Equations The Attempt at a Solution what I did initially was to take the integral from 0 to infinity of e^(-st)e^(-t/2)u(t) dt this gave me 2/(2s+1) which when I sub in -.5 to find a divide by 0 or discontinuity then...

Homework Statement Please refer to the image attached. The first part, (i). Homework Equations None.The Attempt at a Solution My answer is 0 </= x </= 4, but the answer says 0<x<4. Why are 0 and 4 not included? Since the domain includes 6, then 0.5(6)+1 =4, 4 should be included right?

Homework Statement A projectile is fired at 30 km/h at the angle θ in x direction of an x-y plane. Ignoring the effects of air resistance, find the maximum range and the value of θ that gives this range Part A: write down the initial horizontal and vertical components of the velocity Part...

Homework Statement I constructed my own question to try to make sense of the following notation. g(x) = 2√x g : X → Y. What does X and Y equal? Homework Equations For 2√x, x = or > than 0. The Attempt at a Solution g(x) = 2√x g : [0, ∞) → [0, ∞) So X = Y = [0, ∞) The...

Homework Statement First off, this is NOT a homework problem. I do not need an actual "answer", but I do have a conceptual question. Here it is: Consider a projectile motion problem such as a baseball being hit. Assume that it is hit and caught at the same height above the ground. In this...

Let $a, b, c$ be positive real numbers satisfying $$\frac{1}{3}\le ab+bc+ca \le 3$$. Determine the range of values for i) $abc$, ii) $a+b+c$.