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Road to A

Authored by AMIRAH BM

Mathematics

12th Grade

Used 3+ times

Road to A
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20 questions

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1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Find the values of a and b that satisfy the equation 2+ai=6−2ib+i2+ai=\frac{6-2i}{b+i} .

I. a=−2, b=2a=-2,\ b=2

II. a=−4, b=1a=-4,\ b=1

III. a=0, b=1a=0,\ b=1

IV. a=−1, b=3a=-1,\ b=3

I and II

I, III and IV

IV only

All of the above

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Solve the inequality 5x>2x2+35x>2x^2+3 .


(−∞,∞)\left(-\infty,\infty\right)

[1,32]\left[1,\frac{3}{2}\right]

(1,32)\left(1,\frac{3}{2}\right)

(−∞,1)∪(32,∞)\left(-\infty,1\right)\cup\left(\frac{3}{2},\infty\right)

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Given 2x−1x−1−3≥0\frac{2x-1}{x-1}-3\ge0 and the solution is (1,2]\left(1,2\right] . Given 2x−1x−1+3>≤0\frac{2x-1}{x-1}+3>\le0 and the solution is [45,1)\left[\frac{4}{5},1\right) . Find ∣2x−1x−1∣≥3\left|\frac{2x-1}{x-1}\right|\ge3

[45,1)∪(1,2]\left[\frac{4}{5},1\right)\cup\left(1,2\right]

(45,1)∪(1,2)\left(\frac{4}{5},1\right)\cup\left(1,2\right)

(−∞,∞)\left(-\infty,\infty\right)

(−∞,45)∪(1,2)\left(-\infty,\frac{4}{5}\right)\cup\left(1,2\right)

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Solve the equation 2(32x+1)+7(3x)−3=02\left(3^{2x+1}\right)+7\left(3^x\right)-3=0 .

x=−1x=-1

x=−1, x=−32x=-1,\ x=-\frac{3}{2}

x=1, x=−32x=1,\ x=-\frac{3}{2}

x=1x=1

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Find the domain of f(x)=4x−14−xf\left(x\right)=\frac{4x-1}{\sqrt[]{4-x}} .

(−∞,−4)∪(4,∞)\left(-\infty,-4\right)\cup\left(4,\infty\right)

(−∞,4)\left(-\infty,4\right)

(−2,2)\left(-2,2\right)

[−2,2]\left[-2,2\right]

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Find g(x)g\left(x\right) if (g∘f)(x)=1+2x2+x, x≠−2\left(g\circ f\right)\left(x\right)=\frac{1+2x}{2+x},\ x\ne-2 and f(x)=3+2xf\left(x\right)=3+2x .

g(x)=2(x+2)x+1g\left(x\right)=\frac{2\left(x+2\right)}{x+1}

g(x)=2(x−2)x+1g\left(x\right)=\frac{2\left(x-2\right)}{x+1}

g(x)=2(x+2)x−1g\left(x\right)=\frac{2\left(x+2\right)}{x-1}

g(x)=2(x−2)x−1g\left(x\right)=\frac{2\left(x-2\right)}{x-1}

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Given h(x)=e2x+3, x∈Rh\left(x\right)=e^{2x}+3,\ x\in R . Find h−1(5)h^{-1}\left(5\right) .

ln⁡42\frac{\ln4}{2}

−ln⁡2-\ln2

ln⁡2\ln2

ln⁡22\frac{\ln2}{2}

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