Ifp=asinx+bcosxandq=acosx−bsinx, then what is the value ofp2+q2? View Solution If(sinx+siny)=aand(cosx+cosy)=bwhat is the value of sin x sin y + cos x cos y ? View Solution Free Ncert Solutions English Medium NCERT Solutions ...
声明: 本网站大部分资源来源于用户创建编辑，上传，机构合作，自有兼职答题团队，如有侵犯了你的权益，请发送邮箱到feedback@deepthink.net.cn 本网站将在三个工作日内移除相关内容,刷刷题对内容所造成的任何后果不承担法律上的任何义务或责任
解:函数f(x)=cos2x+2√3sinxcosx(x∈R).化简可得:f(x)=cos2x+√3sin2x=2sin(2x+π/6)(1)当x=(2π)/3时,即f((2π)/3)=2sin(2×(2π)/3+π/6)=2sin(3π)/2=-2.(2)f(x)的最小正周期T=(2π)/2=π.由-π/2+2kπ≤2x+π/6≤π/2+2kπ,得:-π/3+kπ≤...
化简 三角函数 one:∫sin2xcos3xdx 怎么得这步 =∫1/2(sin5x-sinx)dx two:∫sin5xsin7xdx=∫1/2(cos2x-
公式是:1.sinXcosY=0.5*[sin(X+Y)+sin(X-Y)]2.sinXsinY=-0.5[cos(X+Y)-cos(X-Y)]带进去,再利用诱导公式就得到下面的式子了…… APP内打开 结果2 举报 积化和差公式。 sinacosb=1/2*[sin(a+b)+sin(a-b)] sinasinb=1/2*[cos(a-b)-cos(a+b)] 查看完整答案 为你推荐 查看更多 三角...
The inverse of a function can exist only if the function is onto, which means that if a function f(x) is equal to y, then the inverse function f−1(y)=x. Answer and Explanation: Substitute 1 forx into the equation f(x)=2x3+x+5 and simplify. {eq}\begin{aligned} f\left...