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P=[768.96(1-m/19)+1.78mq]cos¦Â     (1)
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q=a0+a1*x     (2)
q=a0+a1*x+a2*x^2       (3)
q=a0+a1*x+a2*x^2+a3*x^3        (4)
m=k/q=k/q(x)
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P=[417.1 422 436.13 442 434.2]
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x=[290 310 330 350 370]
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cos¦Â=[0.949 0.943 0.936 0.929 0.921]
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