己知一個正三棱錐的正視圖為等腰直角三角形,其尺寸如圖所示,則其側(cè)視圖的周長為________________.

練習(xí)冊系列答案
相關(guān)習(xí)題

科目:高中數(shù)學(xué) 來源: 題型:


已知函數(shù)的反函數(shù)為,則___________.

查看答案和解析>>

科目:高中數(shù)學(xué) 來源: 題型:


函數(shù)的定義域是

    A. B.    C. D.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         

查看答案和解析>>

科目:高中數(shù)學(xué) 來源: 題型:


經(jīng)調(diào)查統(tǒng)計,某種型號的汽車在勻速行駛中,每小時的耗油量(升)關(guān)于行駛速度

(千米/時)的函數(shù)可表示為.已知甲、乙兩

地相距千米,在勻速行駛速度不超過千米/時的條件下,該種型號的汽車從甲地

到乙地的耗油量記為(升).

(Ⅰ) 求函數(shù)的解析式;

(Ⅱ)討論函數(shù)的單調(diào)性,當(dāng)為多少時,耗油量為最少?最少為多少升?

查看答案和解析>>

科目:高中數(shù)學(xué) 來源: 題型:


由直線上的一點向圓引切線,則切線長的最小值為(     )

A.1             B.            C.               D.3

查看答案和解析>>

科目:高中數(shù)學(xué) 來源: 題型:


是兩個非零向量,且,則的夾角的取值范圍是_____________.

查看答案和解析>>

科目:高中數(shù)學(xué) 來源: 題型:


集合,則

 (A)            (B)         (C)        (D)

查看答案和解析>>

科目:高中數(shù)學(xué) 來源: 題型:


設(shè),函數(shù)在閉區(qū)間上的最大值與最小值的差等于.

(Ⅰ)求的值;(Ⅱ)比較的大小.

查看答案和解析>>

科目:高中數(shù)學(xué) 來源: 題型:


查看答案和解析>>

同步練習(xí)冊答案