Q.3 A = 1 -2 3 4 , B = 0 7 -3 8 Verify that 3A −2 B Q.4 If 2 4 -3 a + 1 b 8 -4 = 7 10 18 1 then find a and b.

Q.5 If A = 1 2 0 1 Verify that (At)t = A
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(a) compute the maclaurin polynomial m2(x) for f(x) = cos x. (b) use the polynomial of part (a) to estimate cos π 12. (c) use a calculator to compute the error made using the estimate from part (b) for the value of cos π 12. remember that the error is defined to be the absolute value of the difference between the true value and the estimate.

You are making a battery for a science project. you have copper wire for your first electrode. you need to choose a conductor, a second electrode, and a device to plug into your battery. you have already chosen a lemon conductor. complete each statement below about the options that include a lemon conductor.

If f(x) =3x-2 and g(x) =2x+1 fins (f+ g) (x)