/sci/ - Science & Math

>>10376057
[math]||T|| \geq 2[/math] because you can look at vector [math][1, 0][/math]
[math]||T|| \leq 2[/math] because [math]\sqrt{4a^2 + b^2} \leq \sqrt{4a^2 + 4b^2} = 2 \sqrt{a^2 + b^2} [/math]