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=
y' sin- 45 cos-45 -7-5 +5
x' 1/2√2 1/2√2 -6 +3 -3 -15/2√2 -3
= =
y' -1/2√2 1/2√2 -7-5 +5 9/2√2 +5
x'' -1/2√2 -1/2√2 -15/2√2 -3+3 -3 0
= =
y'' 1/2√2 -1/2√2 9/2√2 +5-5 +5 17