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1-3&1-4

Authored by 陳以撒 陳以撒

Mathematics

9th - 12th Grade

Used 119+ times

1-3&1-4
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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

求 3x2−7x−6=03x^2-7x-6=0 的解為何?

x=−3x=-3 或x x=−23x=-\frac{2}{3}

x=1x=1 或 x=−2x=-2

x=3x=3 或 x=−23x=-\frac{2}{3}

x=3x=3 或 x=−2x=-2

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

求一元二次方程式 4x2−12x+9=04x^2-12x+9=0 的解為多少?

x=94x=\frac{9}{4} 或 x=1x=1

x=32x=\frac{3}{2}

x=23x=\frac{2}{3}

x=32x=\frac{3}{2} 或 x=23x=\frac{2}{3}

3.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

求 x2−3x−1=0x^2-3x-1=0 的解為多少?

x=±1x=\pm1

x=3±52x=\frac{3\pm\sqrt[]{5}}{2}

x=3±13i2x=\frac{3\pm\sqrt[]{13}i}{2}

無解

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

i2=?i^2=?

−1\sqrt[]{-1}

1

0

-1

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

1+i+i2+i3+i4+i5+i6+i7+i8+i9+i10=?1+i+i^2+i^3+i^4+i^5+i^6+i^7+i^8+i^9+i^{10}=?

ii

i−1i-1

0

-1

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

z1=3+2iz_1=3+2i , z2=−1−3iz_2=-1-3i ,求 z1−z2=?z_1-z_2=?

1

2−i2-i

4−i4-i

4+5i4+5i

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

求 (2+5i)(3−i)=?\left(2+5i\right)\left(3-i\right)=?

11+13i11+13i

1+13i1+13i

6−5i6-5i

5+4i5+4i

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