Question

Please help with this question which I don't understand. There are both question and answer below. Please explain.

(Civil Engineering: Numerical Methods)

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In geotechnical engineering, the relationship between bearing capacity factor N, and the friction angle is summarized in the table below (degree) N 5.14 5 6.49 10 8.35 A function of the form y = a+b tan (d) is thought to represent a reasonable fit to the N data. If the generalized linear regression method is applied with y = af(x)+af(x) to find the optimal coefficients, fill in the following table 5.14 1 0 0 5 6.49 0.087489 10 8.35 1 0.176327

Answer 1

Given that dagree) NC 5.1y 6.49 8.3S Given function the form a tb tan (-) and NC afL Cx) -Gi) a, f from Linear regression me thod y =atbx/-ii Linear Regre ssion Funchio)

Compaye eguation (i) ith both tan Cp) finally using these So Values got Yesults We f,ci)Calwaj^ Şame .e. For 3 trail tanco) f2C0) f2(1i) tans) -0.o7ug8 =0.087YS 66153 1 Ol6326 o.l6327 tanclo) resutts obtaihed as Final ( :x)f OR741 O. 16337 5 8.3S