5x+cosx=0show that the equation 5x+cosx=0 has a solution.Are
urgent!if x satifies the equation sinx+cosx =√2,find the val
Find all of the solutions of th equation cosx+cos2x=0
given that x=(Sin(2/5))^(-1),find the exact value of 1.(Cosx
已知函数f(x)=2a*cosx(sinx+cosx)(a不等于0)
If the root equation (a²-1)x+5|b|-10=0 had inn,(a,b) is
函数f(x)=sinx/根号(5+4cosx) [0
lim(x→0)(1/cosx)=?
已知向量a=(2cosx 根号3sinx) b=(cosx 2cosx) 设函数f(x)=a b (1)若f(x)=0
已知向量a=(-cosx,sinx),b=(cosx,根号3cosx),函数f(x)=a·b,x∈【0,π】(1)求函数
已知向量a=(cosx,2cosx),向量b=(2cosx,sinx),若F(x)=a*b+1,(2)若x属于【0,π/
英语翻译If the root of equation(a2-1)x+5|b|-10=0 had innumerabli
1.Express the equation x^3+6*x^2-4*x+5=0 in reduced form and