(sin x - sin 3x)/(sin^(2)x-cos^(2)x)=2sinx 03:43 (cos 4x+cos3x+cos2x)/(sin 4x+sin3x+sin2x)=cot3x 02:49 cot x cot 2x-cot 2x cot3x-cot3x cotx=1 02:36 tan4x=(4tan x(1-tan^(2)x))/(1-6tan^(2)x+tan^(4)x) 05:56 Prove that : tan 3x=(3tanx-tan^(3)x...
NCERT solutions for CBSE and other state boards is a key requirement for students. Doubtnut helps with homework, doubts and solutions to all the questions. It has helped students get under AIR 100 in NEET & IIT JEE. Get PDF and video solutions of IIT-JEE Mains & Advanced previous year pap...
2.求下列复合函数的导数:(1) y=sinx^2 ;(2)y=cot2x;(3) y=lnsinx ;(4) y=(2+5x)^4 ;(5 y=1/(1+2x) 2(6) y=√(2x+1) ;(7) y=√(4-3x^2) ;(8) y=cos^3x(9) y=tan^2x ;(10) y=lnsin2x ;(11) y=sin^2(2-3x) ;(12) y=√(secx.)(13) y=e^...
1.求下列函数的导数:(1)y=sec(4-3x);(2) y=sin^2x^2-cos^2x^2 ;(3) y=ln[ln(ln^3x)] ;(4) ρ=cot(\va
= ln|x²-3x+5| + C ∫ cot²x dx = ∫ (csc²x-1) dx = -csc²x - x + C 若是∫ cot²(2x) dx = (1/2)∫ cot²(2x) d(2x)= (1/2)∫ [csc²(2x)-1] d(2x)= (1/2)(-cot2x - 2x) + C = -x - (1/2)cot2x +...
cotxcot2x−cot2xcot3x−cot3xcotx=1 Video Solution| ShareSave Answer Step by step video & image solution for ਹੇਠ ਦਿੱਤੇ ਨੂੰ ਸਿੱਧ ਕਰੋ:- cot x cot 2x -cot 2x cot 3x -cot 3x cot x = 1 by Maths experts to help you in doubts & ...
Tan^(-1)(cotx)-Tan^(-1)(cot2x)= 02:39 2Tan^(-1)((sqrt(a-b))/(a+b)"tan"x/2)= 05:09 tan[1/2"Sin"^(-1)(2a)/(1+a^(2))+1/2"Cos"^(-1)(1-a^(2))/(1+a^(2))]= 02:42 tan[1/2Sin^(-1)((2x)/(1+x^(2)))-1/2Cos^(-1)((1-y^(2))/(1+y^(2...
lim[ 1/x^2 - (cotx)^2]=lim[ 1/x^2 - (cscx)^2] +1 (利用(cscx)^2 =(cotx)^2+1)=lim[ (sinx)^2 - x^2] / [x^2* (sinx)^2] + 1 (通分)=lim[ (sinx)^2 - x^2] / (x^4) + 1 (分母等价无穷小替换)=lim[ 2sinxcosx - 2x] /(4x^3) + 1(洛必达法则)...
答案 见解折 解析 累加法寸和 解 报寻一下这个式子: co t2^nx-tan2^nx=(cos2^xx)/(sin2^nx)-(sin2^nx)/(cos2^nx) =((cos2x)^2-(sin2x)^2)/(sin2^2x⋅cos2^nx) =(cos2°x)/(1/(2sin2^2x))= =2cot2^(n+1)x ∴tan2^nx=cdt2^nx-2cdt2^(n+1)x ∴2^ntan2^nx=2^nc...
已知函数f(x)=cot(2x-).下列判断正确的是 ( ) A.f(x)是定义域上的减函数.周期为 B.f上的减函数.周期为2π C.f(x)是区间()上的减函数.周期是 D.f(x)是区间()上的减函数.周期为