class="bi x0 y0 w1 h1"
class="bi x0 y0 w2 h1"
class="bi x0 y0 w1 h1"
class="bi x0 y0 w1 h1"
class="bi x1 y0 w3 h1"
class="bi x0 y0 w4 h1"
class="bi x0 y0 w4 h1"
class="bi x1 y0 w5 h1"
class="bi x0 y0 w1 h1"
class="bi x0 y0 w1 h1"
class="bi x0 y0 w4 h1"
class="bi x0 y0 w4 h1"
class="bi x0 y0 w4 h1"
class="bi x0 y0 w4 h1"
class="bi x1 y1 w6 h2"
class="bi x0 y0 w4 h1"
class="bi x0 y0 w4 h1"
class="bi x0 y0 w4 h1"
class="bi x2 y0 w7 h1"
class="bi x2 y0 w7 h1"
class="bi x2 y0 w7 h1"
class="bi x2 y0 w7 h1"
class="bi x2 y0 w7 h1"
class="bi x0 y0 w4 h1"
class="bi x2 y0 w7 h1"

Trích đoạn rad D Ễ rad. x=4cos(4zt— 2)e m D x=4ecos(4z: + s)c m.

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