sqrt (2)a ; C.2c; D. sqrt ({a)^2+4(c)^2}

参考答案与解析：

相关试题

sqrt (2)pi :2 C. sqrt (2)pi :4 D. sqrt (2)pi :8

sqrt (2)pi :2 C. sqrt (2)pi :4 D. sqrt (2)pi :8

  • 查看答案

    • sqrt (2)-|||-C. sqrt (34)-|||-○ D. sqrt (2)

    sqrt (2)-|||-C. sqrt (34)-|||-○ D. sqrt (2)

  • 查看答案

    • [ sqrt (3),2] -|||-C. [ -2,-sqrt (3)] D. [ -2,-sqrt (3)] cup [ sqrt (3),2]

    [ sqrt (3),2] -|||-C. [ -2,-sqrt (3)] D. [ -2,-sqrt (3)] cup [ sqrt (3),2]

  • 查看答案

    • sqrt (2)pi -|||-C. dfrac (sqrt {2pi )}(4)-|||-D. dfrac (sqrt {2pi )}(8)

    sqrt (2)pi -|||-C. dfrac (sqrt {2pi )}(4)-|||-D. dfrac (sqrt {2pi )}(8)

  • 查看答案

    • -3sqrt (2) C. -2sqrt (3) D. -1

    -3sqrt (2) C. -2sqrt (3) D. -1

  • 查看答案

    • C. D. sqrt (2gH) E.2AgH-|||-sqrt (2gH) sqrt (2{A)_(g)H}

    C. D. sqrt (2gH) E.2AgH-|||-sqrt (2gH) sqrt (2{A)_(g)H}一盛水大容器，水面离底距离为H，容器的底侧面有一面

  • 查看答案

    • +x+sqrt (2)=0 C. -x-sqrt (2)=0 D.

    +x+sqrt (2)=0 C. -x-sqrt (2)=0 D.

  • 查看答案

    • [ -sqrt (2),sqrt (2)] D. [ -sqrt (2),0]

    [ -sqrt (2),sqrt (2)] D. [ -sqrt (2),0]

  • 查看答案

    • sqrt (2) C. sqrt (3) D.2

    sqrt (2) C. sqrt (3) D.2

  • 查看答案

    • (B) sqrt (2). (C) dfrac (sqrt {2)}(2) (D)1.

    (B) sqrt (2). (C) dfrac (sqrt {2)}(2) (D)1.

  • 查看答案