Whats the square setting on a TI-84 Plus Silver Edition calculator?
No, you don't need to use the square function to find the equation of a linear function. A linear function is defined as: y = mx+b, where m is the slope and b is the y-intercept. Use the equation: m = (y2-y1)/(x2-x1) to find the slope of the line. m = (y2-y1)/(x2-x1) m = [(-2/3)-(1)]/[(6)-(1)] m = -(5/3)/5 m = -1/3 y = -1/3x+b (1) = -1/3(1)+b 1 = -1/3+b b = 4/3 Solution: y = 4/3-(1/3)x *The square key (x²) is located directly above the logarithm (LOG) key, to the left of the comma (,) key, and directly below the inverse key [x^(-1)] on the very left edge of the calculator. You can also use the caret (^) symbol located below the "CLEAR" key and above the division (÷) key to type use an exponent by typing "x^2 or x^n, n being any integer you need".
In calculator, when should I use radian mode and degree mode?
As others have answered already it depends really on the information given to you. If the information is in degrees then it makes sense to use the DEG mode; if in Radians then use RAD. However although we are more familiar with degrees as the measure of angles in daily life and basic schooling mathematicians prefer to use Radian measure and any maths at A Level or IB Diploma or AP level etc. and above uses radian measure when dealing with angles. This makes more sense as the definition of a radian is intimately connected to the unit circle and the angle subtended. (A radian is the angle subtended wgen the arc length is equal to the radius of a circle).So it makes sense when doing trigonometry to have your calculator default mode as RAD. However as I always tell my students always check what units are used in each question and make sure your calculator is in the correct mode. This is probably the most common error by students in trig questions!
What is the relation between radian, degree and grad?
1 degree = 1/360 of a circle 1 radian = 1/(2pi) of a circle 1 gradient = 1/400 of a circle (and is much less used than the others) Degrees and gradients are arbitrarily chosen using convenient divisors (360 and 400). 1 radian = the angle created when the radius of a circle is laid out along the circumference. Since C = 2 pi r, there are 2 pi radians in a full circle. 1 radian = about 57.3 degrees = 63.66 grads.So question arises is :- Why does anyone want to divide a right angle into 100 grads instead of 90 degrees?grads are a decimal unit, and are subdivided into simple 100ths, just like the meter is subdivided into cetimeters..Degrees are not decimal units--they are subdivided into 60 minutes and then another 60 Page on seconds.so every time you want to do a simple calculation (say, adding two angles), you have to do first do TWO extra steps--convert the seconds into decimal minutes, then convert the decimalized minutes into decimal degrees. (most pocket calculators have a simple button that does this, but it still requires you to press an extra button before doing the actual calculation that you want to complete.try this example--add two angles : 75 degrees, 45 minutes, 20 seconds plus 25 degrees 15 minutes 10 seconds. or add 75.753 plus 25.251 Which is easier?Land surveyors (those guys you see on the side of the road with an instrument mounted on a tripod) make hundreds or even thousands of angle measurements during a day's work.Grads are great!!! :)
NOT A Property of the Pearson Correlation coefficient r? STATISTIC MAJOR HELP!?
A) r is always between -1 and 1. B) r depends on which of the two variables is designated as the response variable. c) r measures the strength of the linear relationship between x and y. D) r does not depend on the units of y or x. E) r has the same sign as the slope of the regression equation. At first I thought it was E, but then with a little research, I realized I was wrong. Now, I think it is B, but I'm not too sure. Help? And if so I'd to know why to understand better. ---- If the data points in a scatterplot show a nearly circular pattern, then the correlation is near zero. True or False ^ for this question, I put it is true because if is in a liner position that it would be 1, but it's not. Am I right. And If I am wrong then please explain to me why. I want to understand
TI 84 Plus ERROR with OS?
Use TI-GraphLink: http://education.ti.com/educationportal/... 1. Make sure your settings are correct. In the 'Connect' menu, select the COM port that your cable is connected to, and select in the Connect/Cable type menu that you have a Black link 2. In the same Connect menu, go to the Send Flash Software submenu. Click on Operating System. 3. Get your calc, take one battery out and press del while re inserting the battery 4. Go to your comp again. Go to the folder that your OS is in, and double click on your OS file. 5. The calc should recieve the OS now. Because the link port is really slow, it takes about 30 minutes to send <_<. (However the USB link on the TI-84+ should be faster). If it doesn't work, try rebooting your comp or try different settings for the cable.
What is the equation that gives you a heart on the graph?
I actually like this equation: