Let a,b∈R3 be fixed, distinct vectors, and let x:R→R3 be the function defined by x(t)=a+sin(t)b. Suppose a particle has position x(t) at time t seconds. Which of the following best describes the motion of the particle? There is one correct answer.单项选择题

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类似问题

Let 𝑎 , 𝑏 ∈ 𝑅 3 be fixed, distinct vectors, and let 𝑥 : 𝑅 → 𝑅 3 be the function defined by 𝑥 ( 𝑡 ) = 𝑎 + sin ⁡ ( 𝑡 ) 𝑏 . Suppose a particle has position 𝑥 ( 𝑡 ) at time 𝑡 seconds. Which of the following best describes the motion of the particle? There is one correct answer.

Which of the following trees corresponds to a potential parse of the ambiguous sentence below, with correct syntactic categories? Some diagnostics are provided.

Which of the following sentences contain two non-finite verbs? Select all that apply.

The syntactic head of a phrase is the most important element of a phrase and whose category defines the phrase's [ Select ] exponent movement distribution head . Single words or phrases that form part of a phrase but are not the head are called [ Select ] head complement dependent argument modifier . This classification can be further divided into: 1) [ Select ] arguments modifiers complements dependents heads , which have a closer relationship to the head, and are not easily reordered and 2) [ Select ] arguments complements dependents heads modifiers , which have a much looser connection to the head and can often be reordered with other [ Select ] heads modifiers complements dependents arguments . Consider the concrete example: "a strong cup of coffee" and the following diagnostics. In this example, "cup" is a [ Select ] dependent complement argument head modifier , "of coffee" is a [ Select ] argument dependent complement head modifier , "strong" is a [ Select ] argument modifier complement head dependent , and "a" is a [ Select ] modifier dependent head dependent complement .

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