Find all of the solutions of th equation cosx+cos2x=0

Find all of the solutions of th equation cosx+cos2x=0 Find the equation of the line OP Find the equation of line tangent to the graph of f(x)=e+ln 这么做这数学(find the equation of the tangent) 1.Find the equation of the tangent to the curve y=x^2,which Find the equation of a line in standard form given: 以前学过的知识都忘了1.one of the solutions to the equation x^2+20=-4x 英语翻译Given is the function f(x)=ln2(x-4)Find the equation of Graph and find the slope of the following equation :Y = 100 Find the equation of the locus of the mid-point of the chord Find an equation of the tangent line to the graph of the fun Find the equation of the perpendicular bisector of A(-2,1)an