What does a delta mean in calculus? - Socratic
2018年3月5日 · Read below. Mainly used for "Difference between two given values", it is used a lot in derivatives. If we have any line on a graph, its slope is (y_2-y_1)/(x_2-x_1) This means "the change in y value over the change is x value" which can be rewritten as (Deltay)/(Deltax) Calculus stuff... Now, more interestingly, as these difference gets closer and closer to zero, we can say …
How do you know when to use brackets or parenthesis in
2015年3月26日 · Please see below. Use a bracket (sometimes called a square bracket) to indicate that the endpoint is included in the interval, a parenthesis (sometimes called a round bracket) to indicate that it is not. Brackets are like inequalities that say "or equal" parentheses are like strict inequalities. (3,7) includes 3.1 and 3.007 and 3.00000000002, but it does not include …
What's the difference between: undefined, does not exist and
2015年9月18日 · It's undefined. 1/0 = "undefined" You tend to see "does not exist" when you encounter imaginary numbers in the context of real numbers, or perhaps when taking a limit at a point where you get a two-sided divergence, such as: lim_(x->0^+) 1/x = oo lim_(x->0^-) 1/x = -oo Therefore: lim_(x->0) 1/x => "DNE" graph{1/x [-10, 10, -5, 5]} This would be ...
What are the mathematical symbols for sum, difference ... - Socratic
2014年11月18日 · That would vary on what is meant on "sum", "difference" and "product". Other than that exception, sum, difference, product, and quotient are just fancy words for adding, subtracting, multiplying, and dividing respectively. There are the simple symbols: a+b,a-b,axxb, a-:b (or a/b). There is a special symbol for difference used in some math and science equations: …
How do you write the expression for "Twice the difference of
2015年6月11日 · I would say: 2(Z-12)=10 Twice means two times; Difference means subtraction. Probably: Z=17
How do you know if a solution is "no solution" or "infinite
2014年11月13日 · For an answer to have an infinite solution, the two equations when you solve will equal 0=0. Here is a problem that has an infinite number of solutions. 3x+2y= 12 -6x-4y=24 If you solve this your answer would be 0=0 this means the problem has an infinite number of solutions. For an answer to have no solution both answers would not equal each other. Here is …
What is the difference between a casual relationship and ... - Socratic
2018年3月27日 · A causal relationship means that one event caused the other event to happen. A correlation means when one event happens, the other also tends to happen, but it does not imply that one caused the other.
Is there a difference between writing f (x), g (x), h (x)? Do the ...
2016年6月14日 · No. They have no special significance. All of these are simply used by convention to refer to a function. For example, f(x)=e^x, a(x)=e^x, and z(x)=e^x all mean the same thing. However, some notations mean only one thing. For example, zeta(s) refers to the Riemann zeta function: sum_(n=1)^oo1/n^s (See this link for more info: Riemann zeta function) In …
What is the difference between the mean, median, and mode?
2015年10月29日 · Mean is the average of given sets of numbers. You should add the numbers up then divide by the number of the numbers. Median is the number in the middle when you order the numbers in an ascending order. If there are two numbers in the middle, you should take the average of those two numbers. Mode is the number which is repeated the most in the set. For …
What's the difference between the population mean of a ... - Socratic
2018年1月20日 · Population mean: average calculated from a whole population. Sample mean: average of a small sample of the population; approximates the population mean. Mean: expected value of a random variable. A population mean is the true (often impossible to know) average for the population. If you were able to measure a certain quantity for every single unit in a …