#### Introduction to Psychology Essay

UNIVERSITY OR COLLEGE OF NAIROBI SCHOOL OF ECONOMICS SUMMARY OF PSYCHOLOGY OFFERED BY: NJUE ANGELINE WANJA X74/53648/2012 PROVIDED TO: TEACHER GATUMU 1 . MAKE…...

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USING INTEGRALS - NCERT ALTERNATIVES

Question you:

Find the spot of the place bounded by the curve y2 = by and the lines x sama dengan 1, times = 5 and the xaxis. ANSWER

The spot of the location bounded by curve, y2 = times, the lines, x = 1 and x sama dengan 4, and the x-axis is a area ABCD.

Question a couple of:

Find the region of the place bounded by simply y2 sama dengan 9x, x = a couple of, x = 4 as well as the x-axis in the first sector.

ANSWER

one particular

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The area of the region bounded by the curve, y2 sama dengan 9x, by = a couple of, and by = four, and the x-axis is the region ABCD.

Issue 3:

Discover the area in the region bounded by x2 = 4y, y = 2, con = 4 and the y-axis in the initial quadrant.

SOLUTION

2

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The region of the location bounded by curve, x2 = 4y, y = 2, and y sama dengan 4, as well as the y-axis is a area ABCD.

Question 4:

Find the location of the region bounded by ellipse

RESPONSE

The given equation in the ellipse,

, may be represented while

Question your five:

Find the location of the area bounded by the ellipse

RESPONSE

The offered equation in the ellipse could be represented since

3

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It is usually observed the ellipse is usually symmetrical regarding x-axis and y-axis. в€ґ Area bordered by ellipse = four Г— Location OAB

Therefore , area bordered by the ellipse =

Query 6:

Find the area of the region in the first quadrant enclosed by simply x-axis, collection

and the

group

ANSWER

The spot of the area bounded by circle,

OAB.

4

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, and the x-axis is the place

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The purpose of intersection of the range and the circle in the 1st quadrant is Area OAB = Area О”OCA + Area ACB

.

Area of OAC

Area of HURUF

Therefore , place enclosed by simply x-axis, the line

, and the circle

in the first

quadrant =

Question several:

Find the region of the smaller sized part of the group x2 & y2 = a2 cut off by the collection ANSWER

five

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The area from the smaller part of the circle, x2 + y2 = a2, cut off by the line, ABCDA.

, is the region

It can be seen that the area ABCD is usually symmetrical about x-axis. в€ґ Area ABCD = a couple of Г— Place ABC

Consequently , the area of smaller portion of the circle, x2 + y2 = a2, cut off by line, is definitely

units.

Query 8:

6th

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,

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The area among x = y2 and x sama dengan 4 is definitely divided into two equal parts by the collection x sama dengan a, discover the value of a.

ANSWER

The queue, x sama dengan a, splits the area bordered by the parabola and x = four into two equal parts. в€ґ Region OAD sama dengan Area ABCD

It can be observed that the provided area can be symmetrical regarding x-axis. в‡’ Area OED = Location EFCD

Via (1) and (2), we obtain

7

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Therefore , the value of a is

Issue 9:

.

Locate the area in the region bounded by the allegoria y = x2 and ANSWER

The area bounded by parabola, x2 = sumado a, and the line,

, can be represented as

The given region is shaped about y-axis.

в€ґ Region OACO sama dengan Area ODBO

The point of intersection of parabola, x2 = y, and line, y = x, can be described as (1, 1). Area of OACO = Place О”OAB вЂ“ Area OBACO

в‡’ Part of OACO = Area of О”OAB вЂ“ Part of OBACO

Therefore , required region =

eight

units

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Issue 10:

Locate the area bordered by the competition x2 sama dengan 4y plus the line times = 4y вЂ“ 2 ANSWER

The area bounded by the curve, x2 = 4y, and series, x sama dengan 4y вЂ“ 2, is definitely represented by shaded area OBAO.

Permit A and B always be the parts of intersection with the line and parabola. Runs of level

.

Coordinates of point W are (2, 1).

We draw APPROACH and BM perpendicular to x-axis.

It could be observed that,

Area OBAO = Region OBCO + Area OACO вЂ¦ (1)

Then, Place OBCO = Area OMBC вЂ“ Location OMBO

Similarly, Area OACO = Region OLAC вЂ“ Area OLAO

9

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Consequently , required location =

Query 11:

Get the area in the region bounded by...

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