3 years ago

How to integrate cos^-2x . Question from Alevel Pure Maths 3

Mathematics

1 answer:

VashaNatasha [74]3 years ago

8 0

Answer:

I do think I can answer this

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Can someone find the sum?

viktelen [127]

X^2 + x + 1 + 3x^2 + 3x + 2. Just combine the like terms:

x^2 + 3x^2 + x + 3x + 1 + 2

4x^2 + 4x + 3. <--- the sum.

5 0

3 years ago

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Please answer this (question on image enclosed)

Anit [1.1K]

Answer:

its 900

Step-by-step explanation:

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3 years ago

(6-7)[4-6]^2+2(-4)-2]

horsena [70]

This answer would be (-14).

6 0

3 years ago

I need help answering the question in the picture provided

adoni [48]

answer:

(a).

Equation of circle is x² + y² - 25 = 0

(b).

(-5, 0) » yes

(√7, 1) » no

(-3, √21) » no

(0, 7) » no

Step-by-step explanation:

(a).

If centred at origin, centre is (0, 0)

General equation of circle:

${ \boxed{ \bf{ {x}^{2} + {y}^{2} + 2gx + 2fy + c = 0}}}$

but g and f are 0:

${x}^{2} + {y}^{2} + c = 0 \\ but : \\ c = {g}^{2} + {f}^{2} - {r}^{2} \\ c = { - 25}$

8 0

3 years ago

Solve for r. -13 = r/9 +8

love history [14]

R/9 = -21
Multiply by 9
r = -189

4 0

2 years ago

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How to integrate cos^-2x . Question from Alevel Pure Maths 3 ​

How to integrate cos^-2x . Question from Alevel Pure Maths 3