1) An ostrich runs along a mountain path with coordinates given by r(t) =< et, e-t, √2 t> a) What is the change in the ostrich's altitude (z-direction) from t=0 to t=10? b) What is the ostrich's speed in the x-direction when t=4? c) What is ostrich's speed in the y-direction when t=4? d) Find a formula for the total distance travelled by the ostrich from t=0 to t=4

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