Numere complexe
Rezolvam exercitii cu numere complexe, conform programei de clasa a X-a si programei de Bacalaureat.
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Captain Spike eat all the school library. Can you prove her that you are smarter? You have already completed the quiz before. Hence you can not start it again.
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Question 1 of 10
1. Question
1 pointsValoarea lui x∈R pentru care numărul z=(5x-10)+ 7i este pur imaginar esteCorrect
Incorrect
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Question 2 of 10
2. Question
1 pointsPartea reală a numărului z=(2+i)/(1-i) esteCorrect
Incorrect
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Question 3 of 10
3. Question
1 pointsModulul numărului z=(1+i)/(1-i) esteCorrect
Incorrect
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Question 4 of 10
4. Question
1 pointsModulul numărului z=3-4i esteCorrect
Incorrect
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Question 5 of 10
5. Question
1 pointsValorile numerelor a,b∈ R pentru care are loc egalitatea: 2a-3i=-4+(5-2b)i suntCorrect
Incorrect
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Question 6 of 10
6. Question
1 pointsValoarea lui x∈R pentru care numărul z=7+(3x+6)i este real esteCorrect
Incorrect
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Question 7 of 10
7. Question
1 pointsNotam i^n numărul i la puterea a n-a. Valoarea numărului z= i^8+i^9+i^10+i^11+i^12 esteCorrect
Incorrect
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Question 8 of 10
8. Question
1 pointsNumărul (1+i)^8 ( adica 1+i la puterea a 8-a) este egal cuCorrect
Incorrect
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Question 9 of 10
9. Question
1 pointsFie z=1+i şi z’=1-i. Atunci 1/z +1/z’ este egal cuCorrect
Incorrect
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Question 10 of 10
10. Question
1 pointsNotam x^2 numarul x la puterea a doua. Rădăcinile complexe ale ecuaţiei x^2+4=0 suntCorrect
Incorrect
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Examples of questions from "Numere complexe"
- Partea reală a numărului z=(2+i)/(1-i) este
- Notam i^n numărul i la puterea a n-a. Valoarea numărului z= i^8+i^9+i^10+i^11+i^12 este
- Fie z=1+i şi z’=1-i. Atunci 1/z +1/z’ este egal cu
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