In[2]:=3+5,Out[2]= 8;In[3]:=%-2,Out[3]= 6; In[4]:=%2+4,Out[4]= 12; In[5]:=1/3-1/4,Out[5]= ;In[6]:=N[%],Out[6]= 0.0833333; In[7]:=N[%5+12,10],Out[7]= 12.08333333(注意字母的大小写) 3.变量赋值:变量=表达式,“x=.”或Clear[x]表示清除对x的赋值。
A Class Apart (2007) (TV) IMDB ** A few maths school scenes, including the familiar "find X" − "Here it is!" Pythagoras joke. Cloak and Dagger (1946) IMDB *** Gary Cooper in hiding passes the time by drawing on a wall, calculating the arc length of a trigonometric curve. ...
A handy hex-to-Unicode entry method works with WordPad 2000/XP, Office 2000/XP edit boxes, RichEdit controls in general, and in Microsoft Word starting with Word 2002. Basically you type a character's hexadecimal code (in ASCII), making corrections as need be, and then type ...
The parametric equations of the hypotrochoid are x = (a – b)cos q + c cos [(a – b)/b]q y = (a – b)sin q – c sin[(a – b)/b]q. I -ical Words ending in this way are usually the offspring of ignorance. The stem -al of the Latin adjectival suffix -alis has been...
Let us say that x is the width. We may represent the length as 2x. x = width of the rectangle2x = length of the rectangleThe formula of the perimeter of a rectangle is P = 2L + 2W. Therefore, the mathematical sentence for the problem is written as,...
29x2+x+2929, 312 I was pleased to see this sequence of lengths of primes generated was not in the OEIS. So I submitted it, and it is now, along with the code I wrote. (I discovered along the way that the version where sequences of length one are included was already in the data...
aNote that all X have the same mathematical form, with the signal-to-noise ratio for each channel proportional to Y of (1.60) (i=0 corresponds to the hop pulse channel). 注意所有X有同一个数学形式,以信号噪音比为每种渠道比例与Y (1.60) (i=0对应于蛇麻草脉冲渠道)。[translate] ...
Undergraduate mathematics students sometimes confuse “and” and “or” in the following fashion: What is the solution set of x2 − 4x + 3 > 0, in the real line? It is {x∈ℝ:x<1}∪{x∈ℝ:x>3}={x∈ℝ:x<1 or x>3}. Thus, the appropriate word is “or”. However...
73) if Φ(X(s))=(ΦX)(s). Let A⊆S be any subset, called a structuring element. Generalizing Example 6, consider the self-map δA of P(S) defined by (δAx)s:=⋁{xs−t:t∈A}. According to Fact (35) in III.B.3, δA is a dilation. We claim that (εAy)s:=...
Undergraduate mathematics students sometimes confuse “and” and “or” in the following fashion: What is the solution set of x2 − 4x + 3 > 0, in the real line? It is {x∈ℝ:x<1}∪{x∈ℝ:x>3}={x∈ℝ:x<1 or x>3}. Thus, the appropriate word is “or”. However...