365bet中国官方网站

  • word of the day

    concave

    concave - 365bet中国官方网站 definition and meaning for word concave

    Definition
    (adj) curving inward
  •    Mnemonics (Memory Aids) for concave

    consists of cave.. so hollow.. cave is always curved inwards


    Word used in video below:
    text: differentials by convex and concave
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