ραβΔσ ∑ i = 1 n ( a + b ) n ( x 2 + 2 x y + 6 ) β μ π ν ω 1 2 5 {\displaystyle \sum _{i=1}^{n}(a+b)^{n}\,\,\,\,(x^{2}+2xy+6)\beta \mu \pi \nu \omega {\frac {1}{2}}{\sqrt {5}}} d 2 y d x + w 2 y = 0 {\displaystyle {\frac {d^{2}y}{dx}}+w^{2}y=0}
T = 2 π l g {\displaystyle T=2\pi {\sqrt {\frac {l}{g}}}}
d 2 y d t 2 + 2 b d y d t + ω 2 y = p sin ( ω t ) {\displaystyle {\frac {d^{2}y}{dt^{2}}}+2b{\frac {dy}{dt}}+\omega ^{2}y=p\sin(\omega t)}
H2SO4→H2O+S3
