When to use "is" vs. "does" when asking a question?
When the verb in a statement is neither a primary auxiliary verb (be, have, do) nor a modal auxiliary verb (will, would, can, could, may, might, shall, should, must, ought to, used to), do is …
Difference between "≈", "≃", and "≅" - Mathematics Stack Exchange
For a closer similarity "≃" might mean a triangle almost congruent but only ROUGHLY similar, such as two triangles 3/4/5 and 3.1/4.1/5.1 while "≅" means congruent. Real life triangles use …
Which of these is correct, “She doesn't has” or “She doesn't have”?
The verb 'does' is a singular too. Now what makes the distinction is what our mind interprets. We think the sentence "She has a book" is equivalent to "She does have a book". This is where …
notation - what does ≼ or ≺ mean? - Mathematics Stack Exchange
what does ≼ or ≺ mean? Ask Question Asked 9 years, 2 months ago. Modified 9 years, 2 months ago.
Does $2^i$ exist, if so how do I calculate its value?
which does not help, so I tired, $$2^i = (2e^{2\pi i})^{i}= 2^ie^{-2\pi }$$ which is utter nonsense (and bad maths?) So google gives a value of, $$2^i = 0.769238901 + 0.638961276 i$$ So my …
Weird E letter? (sigma) - Mathematics Stack Exchange
What does the math notation $\sum$ mean? My school's prescribed book uses the weird letter E character without explaining what it is in the first chapter when it talks about the binomial …
What do Subscripted numbers in an equation mean?
$\begingroup$ @Brian M. Scott What does it mean when each subscript is non-numerical, and is exactly the same? I have an equation that has a value T (temperature in Kelvin), subscripted …
Does it have or has? - English Language Learners Stack Exchange
2018年11月6日 · The answer in both instances is 'have'. It is ungrammatical to use 'has' in questions that begin with 'Do' or 'Does'. In these types of questions the verb 'do' is conjugated …
What do convergence and divergence mean? And why do they …
2015年5月2日 · I understand that when a series diverges, y doesn't approach 0 when x approaches infinity, and converging series do. But what does this say? I just want to …
What does $QAQ^{-1}$ actually mean? - Mathematics Stack …
2020年4月28日 · I'm self-learning Linear Algebra and have been trying to take a geometric approach to understand what matrices mean visually. I've noticed this matrix product pop up …