Algebradan yozma ish-1

9-sinflar
Algebradan yozma ish-1
1-variant
1. Y=x²+2x+3 funksiya grafigini yasang va uning eng kichik qiymatini toping. 2. Parabolaning kordinata o`qlari bilan kesishish nuqtalarining koordinatalarini toping.---------------- 3. y=x<sup>2</sup>-4x parabola uchining koordinatalarini toping. 4. y=2x<sup>2</sup> funksiya qanday oraliqda o`sadi ?, kamayadi ?, shu funksiyaning qrafigini yasang.
2-variant
1. y=-x²+2x+3 funksiya grafigini yasang va eng katta qiymatini toping. 2. Parabolaning koordinata o`qlari bilan kesishish nuqtalarining koordinatalarini toping.------------------ 3. y=-x<sup>2</sup>+2x parabola uchining koordinatalarini toping. 4. y=-2x<sup>2</sup> funksiya qanday oraliqda o`sadi ?, kamayadi ?, shu funksiyaning grafiklarini yasang.
Algebradan yozma ish-2 1-variant 1.Tengsizliklarni yeching. 1) x²-3x-4<0 2) 3x²-4x+8≥0 3) x²+20x+100≤0 2.Tengsizliklarni intervallar usuli bilan yeching. x(x-1)(x+2)≥0
2-variant
1. Tengsizliklarni yeching. 1) 3x²-5x-2 <0 2) –x²+3x-5>0 3)4x²-4x+1≥0 2. Tengsizliklarni intervallar usuli bilan yeching. x(x+3)(x-2)≤0
Algebradan yozma ish-3 1-variant
1 . Hisoblang. 3^-5:3^-7-2^-2∙2⁴+((_{ })^-1) 2. Sonlarni taqqoslang . 1) 5^-7/5 va 4^-7/5 2)(0,78)^2/3 va (0,67)^2/3 3. Ifodani soddalashtiring. 3x^-9∙3x⁵ x-4 x-4 4. Tenglamani yeching. 16^2x-1-8^3x-2=0 5. a=0,04 bo`lganda <sub> </sub> ifodaning qiymatini toping.
2-variant
1 . Hisoblang. 25<sup>1,5</sup>∙25<sup>-1</sup>+(5<sup>3</sup>)<sup>2/3</sup>:5<sup>3</sup>-48<sup>2/3</sup>:6<sup>2/3</sup> 2. Sonlarni taqqoslang. 1)7<sup>-7/3</sup> va 6<sup>-7/3</sup> 2)(3,07)<sup>2/3</sup> va (3,17)<sup>2/3</sup> 3. Ifodani soddalashtiring. 2x<sup>14</sup>∙8x<sup>-5</sup> x-4 4x<sup>8</sup> 4. Tenglamani yeching. 9<sup>x-1</sup>-27<sup>2x-2</sup>=0 5. a=125 bo`lganda _{ } ifodaning qiymatini toping.

9-sinflar

Geometriyadan yozma ish-1 1-variant
1. ABC uchburchakning AC tomoniga parallel to`g`ri chizing AB va BC tomonlarini mos ravishda N va P nuqtalarda kesadi. Agar AN=4sm NB=3sm BP=3,6sm bo`lsa BC ni toping. 2. Ikkita o`xshash uchburchakning yuzi 50dm² va 32dm² ularning perimetrlari tig`indisi 117dm bo`lsa, haar bir uchburchakning perimetrini toping. 3. ABCD trapetsiya ma`lumotlari asosida x ni toping.
2-variant
1. ABC uchburchakning AC tomoniga parallel to`g`ri chizing AB va BC tomonlarini mos ravishda K va L nuqtalarda kesadi. Agar KB=2sm AK=3sm AC=4sm bo`lsa KL ni toping. 2. ∆ABC <sub> </sub> ∆A<sub>1</sub>B<sub>1</sub>C<sub>1</sub> mos tomonlari nisbati 7:5 ga teng. ABC uchburchak yuzi A<sub>1</sub>B<sub>1</sub>C<sub>1</sub> uchburchak yuzida 36sm<sup>2</sup> ga ortiq bo`lsa bu uchburchaklar yuzlarini toping. 3. ABCD trapetsiya ma`lumotlari asosida x ni toping.

Geometriyadan yozma ish-2 1-variant 1.Agar cosα=-8/17 va 90˚<α<180˚ bo`lsa, sinα, tgα, ctgα nimaga teng. 2. To`g`ri burchakli uchburchakning bir burchagi 60˚, kaeti esa 6ga teng. Uning kichik kateti va gipotenuzasini toping. 3.Radiusi 5sm bo`lgan aylanaga teng yonli trapetsiya tashqi chizilgan. Agar trapetsiyaning o`tkir burchagi 30˚ bo`lsa, uning yon tomonini toping.

2-variant
1.Agar sinα=2/3 va 90˚<α<180˚ bo`lsa, cosα, tgα, ctgα nimaga teng. 2. To`g`ri burchakli uchburchakningbir burchagi 30˚, gipotenuzasiga tushirilgan balandligi 6sm, uchburchak tomonlarini toping. 3. To`g`ri burchakning 12sm gat eng. Dioganali bir tomoni bilan 30˚ga burchak hosil qiladi. To`g`ri to`rttburchak yuzini toping.