Berilgan masalalarning yechimlari (Python dasturlash tilida) keltirilgan

64.2-masala.
y = x * cos x funksiyasi qiymatini hisoblovchi dastur tuzing. x 
foydalanuvchi tomonidan kiritiladi. 
Dastur: 
from math import* 
x=float(input('x kiriting=')) 
cosx=x*cos(x) 
print('cosx=',cosx) 
64.3-masala.
Kvadrat tenglamaning ildizlarini hisoblash dasturini tuzing. a, b, c 
foydalanuvchi tomonidan kiritiladi. 
Dastur: 
from math import* 
a=float(input('a=')); b=float(input('b=')); c=float(input('c=')); d=b*b-4*a*c 
if d==0: 
x=-b/2 
print('x=',x) 
elif d>0: 
x1=(-b+sqrt(d))/2; x2=(-b-sqrt(d))/2; print('x1=',x1); print('x2=',x2) 
else: 
print('Yechimi yo`q') 
64.5-masala.
Doira sektorining yuzasini hisoblash dasturini tuzing. Doiraning 
radiusi hamda sektorning burchagi (gradusda) foydalanuvchi tomonidan kiritiladi. 
Dastur: 
from math import* 
r=float(input('Radiusni kiriting=')) 
alfa=float(input('Burchakni kiriting=')) 
S=pi*pow(r,2)*alfa/360 
print('S=',S) 
65–66-darslar. PYTHONDA FOYDALANUVCHI 

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45 
GRAFIK INTERFEYSI BILAN ISHLASH 
 
65-66.1-masala.
Rangi yashil, o‘lchami 100x100 bo‘lgan “Mening birinchi 
ilovam” nomli GUI oynasini yaratuvchi dastur kodini yozing. Oynada “Salom 
O‘zbekiston” xabarini chiqaruvchi tugmachasini joylashtiring. 
Dastur: 
from tkinter import * 
window = Tk() 
window.title('Mening birinchi dasturim') 
window.geometry('300x200') 
window.configure(background='green') 
my_label=Label(window, width=40, 
height=5, bg='Green', text='') 
my_label.grid(row=0, column=0) 
def change_text(): 
my_label.config(text="Salom O;zbekiston ") 
my_button=Button(window,text="Tugmani bos", width=10,
command=change_text) 
my_button.grid(row=2, column=0) 
window.mainloop() 
65-66.2-masala.
Rangi pushti, o‘lchami 250x150 bo‘lgan “Mevalar” nomli GUI 
oynasini yaratuvchi dastur kodini yozing. Oynada 
berilgan 4 ta mevadan birini tanlash imkonini beruvchi 
vijetni joylashtiring. 
Dastur: 
from tkinter import * 
window = Tk() 
window.title('Mevalar') 
window.geometry('250x250')
window.configure(background='') 
meva=StringVar() 
radio1=Radiobutton(window, text='Anor', variable=meva, value='anor') 
radio1.grid(row=3, column=0, sticky=W) 
radio1.configure(background='red') 
radio1.select() 
radio2=Radiobutton(window, text='Olma', variable=meva, value='olma') 
radio2.grid(row=5, column=0, sticky=W) 
radio2.configure(background='green') 
radio2.select() 
radio3=Radiobutton(window, text='Mandarin', variable=meva, value='mandarin') 

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46 
radio3.grid(row=7, column=0, sticky=W) 
radio3.configure(background='red') 
radio3.select() 
radio4=Radiobutton(window, text='Limon', variable=meva, value='limon') 
radio4.grid(row=9, column=0, sticky=W) 
radio4.configure(background='yellow') 
radio4.select() 
Checkbutton() 
window.mainloop()