指數與對數(6)
Author: 藍邦偉　老師

∵f(a_2+a_4+a_6+a_8+a_{10})=2^{a_2+a_4+a_6+a_8+a_{10}}=4=2^2

∴a_2+a_4+a_6+a_8+a_{10}=2

⇒(a+d)+(a+3d)+(a+5d)+(a+7d)+(a+9d)=5a+25×2=2

⇒a=-\frac{48}{5}

$ f(a_1)·f(a_2)·...·f(a_{10}) =2^{a_1}·2^{a_2}·...·2^{a_{10}}=2^{a_1+a_2+...+a_{10}}$

a_1+a_2+...+a_{10}=\frac{10×(2×(-\frac{48}{5})+9×2)}{2}=-6

∴log_2(2^{-6})=-6

n = 1 (slider from 1 to 9, step 1)
A = (-0.16, 3.58)
B: A + (0.7, 0)
D: A + (0, 0.45)
C: B + D - A
poly1, a, b, c, d = Polygon(A, B, C, D)