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Consider the parametrization of a circle given by for .
whether this parametrization defines as a function of . your answer using the relation between and .
[4]Given the relation , if this defines as a function on and your answer with reference to the definition of a function.
[4]Solve the equation for and whether the solutions as a single-valued function on the domain .
[4]Consider the mapping that assigns to each in the two values . Does this mapping a function? .
[2]why there is no single real-valued continuous function defined on whose graph is the entire circle .
[2]Let . Use the implicit function theorem on to where can be expressed as a differentiable function of . Specify the regions in the plane.
[4]and on . Are and each functions on ? whether either has an inverse that satisfies the circle equation. [4 marks]
[4]Restrict the relation to the lower semicircle and write explicitly as a function of . the domain of this function.
[4]Restrict the relation to the upper semicircle and write explicitly as a function of . the domain of this function.
[4]whether the implicit relation defines as a function of over the interval . Use the vertical line test to your answer.
[3]