Contact us
Choose a category below so we can get back to you as quickly as possible.
令x=sina+cosa x²=sin²a+cos²a+2sinacosa =1+2sinacosa sinacosa=(x²-1)/2 f(x)=(x²-1)/2 f(0)+f(1)=-1/2+0=-1/2
We and our partners use cookies and other technologies to analyze traffic and optimize your experience. View more info and control your cookies settings at any time in our Cookies Policy.