Exercise 2.12. Determine whether or not the given functions f:Z Z are one-to-one or onto (or neither or both). If they are one-to-one or onto, prove it. If they are not, explain why not. (A) f(r) = 2x + 3 (B) f(x) = |x| – 2 (C) f(z) = %3D (D) f(z) = r³ +1

Q: Find the linearization L(x) at x= a. f(x) = - 2x +3x+ 1 a = -3 L(x) =]

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Q: Compute the indicated values of the given function. h(t) = V2 + 2t + 25; h(-5), h(0), h(5) %3D O…

A: From the given function: h(t)=t2+2t+25 So,  At t=-5. h(-5)=-52+2-5+25=25-10+25=40=210 Therefore,…

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Q: (b) Determine e so that п п c£[(x; - X;)² i=l j=1 is an unbiased estimator of o². s2 ogunl to

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