数学公式中，secx，cscx，分别是什么意思？ - 百度知道
1、secx是正割：正割指的是直角三角形，斜边与某个锐角的邻边的比，叫做该锐角的正割，用 sec（角）表示。 如下图所示：一个锐角∠A的正割 正割是余弦函数比值表达式互.
sec^2(x) = 2secx - Symbolab
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Simplify 2sec(x) - Mathway
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sec平方x求导等于多少 - 百度知道
sec平方x的导数为2乘以secx的平方乘以tanx。 具体步骤如下： 1、首先把sec平方x看成一个 复合函数，利用复合函数的求导法则进行求导。 2、令t=secx，要求sec平方x的导数，只需求secx的导数和t的平方的导数。 3、secx的导数为secx乘以tanx。 t的平方的导数为2t。 4、将t=secx代入2t得2secx，再乘以secx的导数得2乘以secx的平方乘以tanx。 5、所以通过以上步骤求得sec平方x的导数为2乘以secx的平方乘以tanx。 1、e得x次方的导数还是e得x次方，e得-x次方的导数为负 …
sec²x的导数是什么？ - 百度知道
sec²x的导数是2 (secx)²·tanx，先把secx当个整体比如Y这样Y²的导数是2Y，然后再对secx求导数，是secxtanx，把两个部分乘一起就是了。 sec²x的导数是什么？ 是2 (secx)^2·tanx过程： [ (secx)^2] '=2secx· (secx) '=2secx·secx·tanx=2 (secx)^2·tanx (secx)'= (1/cosx)'= [1'cosx- (cosx)']/cos^2 x=sinx/cos^2 x.
2secx - Wolfram|Alpha
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secx的平方-1等价于tanx的平方吗为什么? - 知乎
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Graph y=2sec(x) | Mathway
Use the form asec(bx−c)+ d a sec (b x - c) + d to find the variables used to find the amplitude, period, phase shift, and vertical shift. Since the graph of the function sec s e c does not have a maximum or minimum value, there can be no value for the amplitude. Find the period of 2sec(x) 2 sec (x). Tap for more steps...
2sec(x)=tan(x)+cot(x) - Symbolab
Since the denominators are equal, combine the fractions: ca ± cb = ca± b = sin(x)cos(x)−cos2(x)+(−sin(x)+2)sin(x) = sin(x)cos(x)−cos2 (x)+sin(x)(−sin(x)+2) = …
Find the Derivative - d/dx 2sec(x) - Mathway
2 d dx [sec(x)] 2 d d x [sec (x)] The derivative of sec(x) sec (x) with respect to x x is sec(x)tan(x) sec (x) tan (x). Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor.