2a2+4ab,sia=1=b=22a^{2}+4ab,sia=1=b=22a2+4ab,sia=1=b=2
3sin2(x)cos2(x)3\sin^2\left(x\right)\cos^2\left(x\right)3sin2(x)cos2(x)
y′+y=e(−x) + xy'+y=e^{\left(-x\right)}\:+\:xy′+y=e(−x)+x
x=3yx=3yx=3y
∫x7−x2dx\int\frac{x}{\sqrt{7-x^2}}dx∫7−x2xdx
x2−15x+25x−5\frac{x^2-15x+25}{x-5}x−5x2−15x+25
−2−22+4−2−2-2-2^2+4-2-2−2−22+4−2−2
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