Chapter 2 - Elementary Programming - Programming Exercises - Page 58: 2.12

Program: #initialize a and $\mathrm{b}$ $\mathrm{a}=1$ $b=2$ #print table header and first row $\operatorname{print}\left(\right.$ "a $\left.\mathrm{b} \mathrm{a}^{* *} \mathrm{~b}^{\prime \prime}\right)$ $\operatorname{print}\left(a, "^{\prime \prime}, b, " ", a^{* x} b\right)$ #increment a and $\underline{b}$ $a+=1$ $b+=1$ #print table contents $\operatorname{print}\left(a, "^{\prime \prime}, b_{n}^{\prime \prime \prime}, a^{* \star} b\right)$ #repeat three more times $a+=1$ $b+=1$ $\operatorname{print}\left(a, " ", b, " ", a^{* \star} b\right)$ $a+=1$ $b+=1$ $\operatorname{print}\left(a, "^{\prime \prime}, b, " ", a^{* \star} b\right)$ $a+=1$ $b+=1$ $\operatorname{print}\left(a, "^{\prime \prime}, b_{n}^{\prime \prime \prime}, a^{* *} b\right)$

Step 1 of 3: Program Plan: Create a python file with name 2_12PE.PY. In the file, - Initialize variable $a$ and $b$ to 1 and 2 respectively. - Display table header and first row. - Increment variable a and $b$ by 1 - Display second row of table. - Repeat the above 2 steps 3 more times. - Note that this code would have been shorter with for or if loops, but they have not been introduced till chapter 2 , so done in this crude way. Step 2 of 3: Program: #initialize a and $\mathrm{b}$ $\mathrm{a}=1$ $b=2$ #print table header and first row $\operatorname{print}\left(\right.$ "a $\left.\mathrm{b} \mathrm{a}^{* *} \mathrm{~b}^{\prime \prime}\right)$ $\operatorname{print}\left(a, "^{\prime \prime}, b, " ", a^{* x} b\right)$ #increment a and $\underline{b}$ $a+=1$ $b+=1$ #print table contents $\operatorname{print}\left(a, "^{\prime \prime}, b_{n}^{\prime \prime \prime}, a^{* \star} b\right)$ #repeat three more times $a+=1$ $b+=1$ $\operatorname{print}\left(a, " ", b, " ", a^{* \star} b\right)$ $a+=1$ $b+=1$ $\operatorname{print}\left(a, "^{\prime \prime}, b, " ", a^{* \star} b\right)$ $a+=1$ $b+=1$ $\operatorname{print}\left(a, "^{\prime \prime}, b_{n}^{\prime \prime \prime}, a^{* *} b\right)$ Step 3 of 3: Sample Output: $a b a^{* *} b$ 121 238 3481 451024 5615625