True But Weird 😭

上方文字为“Prof: Write the closed form for the sequence 1, 2, 4, 8, 16...”，左侧简笔画小人标注“Me”，下方写“a_n=2^{n-1}”，表情无奈；右侧小人标注“Prof”，下方写复杂多项式，表情呆滞。适合表达无语、被刁难、嘲讽。