9th
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Mathematics

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Vinodkumar KJ

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Mathematics

9th

grade

Secondary 3 - Mathematics

Vinodkumar KJ

2
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20 questions

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1. Multiple Choice
30 seconds
1 pt
Find the derivative of the given equation
f(x) = 7
7
0
7x
14
2. Multiple Choice
30 seconds
1 pt
Find the derivative of the given equation
f(x) = 1/x²
1/2x
-2x
2x
-2x^-3
3. Multiple Choice
1 minute
1 pt
Differentiate y= 12x^-2
24x^-1
-24x^-3
-24x^-1
6x^-3
4. Multiple Choice
30 seconds
1 pt
Find $\frac{dy}{dx}$ for $y=\left(x+5\right)\left(2x-1\right)$ .
$9-4x$
$4x+9$
$4x-9$
$-4x-9$
5. Multiple Choice
30 seconds
1 pt
Find the turning point of:
f(x) = 2x²- 8x + 9 (hint dy/dx=0)
(2,1)
(8,1)
(2,10)
(-2,1)
6. Multiple Choice
30 seconds
1 pt
Find the second derivative of:
f(x) = 2x²- 8x + 9
-8
4
9
0
7. Multiple Choice
30 seconds
1 pt
Find the turning points of:
f(x)=x³+3x²-9x+1 (hint dy/dx=0)
(-3,28) and (1,-4)
(3,28) and (1,4)
(1,28) and (-3,-4)
(3,28) and (-1,-4)
8. Multiple Choice
2 minutes
1 pt
Given f(x) = ax² + 2bx. What are a and b if f'(x) = 8x + 6?
a = 2 and b = 3
a = 3 and b = 2
a = 3 and b = 4
a = 4 and b = 3
9. Multiple Choice
30 seconds
1 pt
Find $\frac{dy}{dx}$ for $y=x^5-\frac{3}{x^3}$ .
$5x^3+\frac{9}{x^4}$
$5x^3+9x^{-4}$
$5x^4+\frac{9}{x^4}$
$5x^4+\frac{9}{x^{-4}}$
10. Multiple Choice
30 seconds
1 pt
A curve has an equation $:\ y=x^3-5x^2+8x-7$ . Find the gradient of the curve at $\left(2,-3\right)$
What does the gradient tells about the point?
Gradient = 0,
It is a turning point of the graph.
Gradient = 0,
It is a cubic curve.
Gradient = 65
Gradient = 0, It is a turning point of the graph.
Gradient = 65
It is a cubic curve.
11. Multiple Choice
30 seconds
1 pt
$y=x^2-4x+1$

A curve has above equation.

Find the coordinates of the the turning point pf the graph.
$\left(0,0\right)$
$\left(2,3\right)$
$\left(-3,2\right)$
$\left(2,-3\right)$
12. Multiple Choice
2 minutes
1 pt
Find the Area of this trapezoid:
84 m²
168 m²
112 m²
56 m²
13. Multiple Choice
2 minutes
1 pt
Find the Area of this trapezoid:
84 m²
168 m²
112 m²
56 m²
14. Multiple Choice
5 minutes
1 pt
What is the area of the triangle?
14.7 in²
14.7 cm²
28 cm²
28 in²
15. Multiple Choice
30 seconds
1 pt
If the area of a triangle is 48 cm² and the base of the triangle is 12 cm, what is the height of the triangle?

Hint: sketch the triangle out.
4 cm
36 cm
60 cm
8 cm
16. Multiple Choice
1 minute
1 pt
Which is the correct area formula for Trapezoids?
17. Multiple Choice
1 minute
1 pt
Which is the correct area formula a Triangle?
18. Multiple Choice
30 seconds
1 pt
The total surfacearea of a hemispherical solid having radius 7cm is
462 cm²
294 cm²
588cm²
154 cm²
19. Multiple Choice
30 seconds
1 pt
The total surfacearea of a hemispherical solid having radius 7cm is
462 cm²
294 cm²
588cm²
154 cm²
20. Multiple Choice
30 seconds
1 pt
A cylindrical pencil sharpened at one edge is the combination of
two cylinders
a hemisphere and a cylinder
a cone and a cylinder
frustum of a cone and a cylinder
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Secondary 3 - Mathematics

9thgrade

Mathematics

Mathematics

9th

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Secondary 3 - Mathematics

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20 questions

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9th
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