用R程序编程求下列的值,正确的命令是 ( )[img=192x60]180398c78107728.jpg[/img] A: tan(1/2*asin(-1/4)) B: tan[1/2*asin(-1/4)] C: tan(1/2)*asin(-1/4) D: tan[1/2]*asin(-1/4)
用R程序编程求下列的值,正确的命令是 ( )[img=192x60]180398c78107728.jpg[/img] A: tan(1/2*asin(-1/4)) B: tan[1/2*asin(-1/4)] C: tan(1/2)*asin(-1/4) D: tan[1/2]*asin(-1/4)
已知α、β属于(0,π),且tan(α-β)=1/2,tanβ=-1/7,且2α-β的值
已知α、β属于(0,π),且tan(α-β)=1/2,tanβ=-1/7,且2α-β的值
已知1+tanα1-tanα=3,计算:(1)2sinα-3cosα4sinα-9cosα; (2)2sinαcosα+6cos2α-35-10sin2α-6sinαcosα.
已知1+tanα1-tanα=3,计算:(1)2sinα-3cosα4sinα-9cosα; (2)2sinαcosα+6cos2α-35-10sin2α-6sinαcosα.
求函数[img=173x42]17da65390bf2806.png[/img]的导数; ( ) A: tan(pi/4 + x/2) B: (tan(pi/4 + x/2)^2/2 ) /tan(pi/4 ) C: (tan(pi/4 + x/2)^2/2 + 1/2) D: (tan(pi/4 + x/2)^2/2 + 1/2) /tan(pi/4 + x/2)
求函数[img=173x42]17da65390bf2806.png[/img]的导数; ( ) A: tan(pi/4 + x/2) B: (tan(pi/4 + x/2)^2/2 ) /tan(pi/4 ) C: (tan(pi/4 + x/2)^2/2 + 1/2) D: (tan(pi/4 + x/2)^2/2 + 1/2) /tan(pi/4 + x/2)
\(\int { { {\tan }^{10}}x { { \sec }^{2}}xdx}\)=( ) A: \(-\frac{1}{11} { { \tan }^{11}}x+C\) B: \(\frac{1}{11} { { \tan }^{11}}x+C\) C: \(\frac{1}{11} { { \cot }^{11}}x+C\) D: \(-\frac{1}{11} { { \cot }^{11}}x+C\)
\(\int { { {\tan }^{10}}x { { \sec }^{2}}xdx}\)=( ) A: \(-\frac{1}{11} { { \tan }^{11}}x+C\) B: \(\frac{1}{11} { { \tan }^{11}}x+C\) C: \(\frac{1}{11} { { \cot }^{11}}x+C\) D: \(-\frac{1}{11} { { \cot }^{11}}x+C\)
\(\int { { {\sec }^{3}}xdx}\)=( ) A: \(\frac{1}{2}\sec x\cot x-\frac{1}{2}\ln \left| \sec x+\tan x \right|+C\) B: \(\frac{1}{2}\sec x\tan x+\frac{1}{2}\ln \left| \sec x+\tan x \right|+C\) C: \(-\frac{1}{2}\csc x\tan x+\frac{1}{2}\ln \left| \sec x-\cot x \right|+C\) D: \(-\frac{1}{2}\sec x\tan x-\frac{1}{2}\ln \left| \csc x+\tan x \right|+C\)
\(\int { { {\sec }^{3}}xdx}\)=( ) A: \(\frac{1}{2}\sec x\cot x-\frac{1}{2}\ln \left| \sec x+\tan x \right|+C\) B: \(\frac{1}{2}\sec x\tan x+\frac{1}{2}\ln \left| \sec x+\tan x \right|+C\) C: \(-\frac{1}{2}\csc x\tan x+\frac{1}{2}\ln \left| \sec x-\cot x \right|+C\) D: \(-\frac{1}{2}\sec x\tan x-\frac{1}{2}\ln \left| \csc x+\tan x \right|+C\)
对于任意锐角α,下列等式不成立的是( ) A: sin2α+cos2α=1 B: tanα?cosα=sinα C: tanα=sinαcosα D: sin(90°-α)=tanα
对于任意锐角α,下列等式不成立的是( ) A: sin2α+cos2α=1 B: tanα?cosα=sinα C: tanα=sinαcosα D: sin(90°-α)=tanα
不定积分$\int<br/>\tan ^{2}x \sec^{2}x\text{d}x=$( ) A: $\frac{1}{3}{{\tan }^{3}}x+C$ B: $-\frac{1}{3}{{\tan }^{3}}x+C$ C: $\frac{1}{3}{{\sec }^{3}}x+C$ D: $-\frac{1}{3}{{\sec }^{3}}x+C$
不定积分$\int<br/>\tan ^{2}x \sec^{2}x\text{d}x=$( ) A: $\frac{1}{3}{{\tan }^{3}}x+C$ B: $-\frac{1}{3}{{\tan }^{3}}x+C$ C: $\frac{1}{3}{{\sec }^{3}}x+C$ D: $-\frac{1}{3}{{\sec }^{3}}x+C$
已知1+tan(丌+a)/1+tan(2丌-a)=3+2√2求cos2(丌-a)+sin(3丌/2+a)×cos(丌/2+a)+2sin2(a-丌)的值的过程
已知1+tan(丌+a)/1+tan(2丌-a)=3+2√2求cos2(丌-a)+sin(3丌/2+a)×cos(丌/2+a)+2sin2(a-丌)的值的过程
$\tan \frac{1}{x} $铅直渐近线$x=$______
$\tan \frac{1}{x} $铅直渐近线$x=$______