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A):Sin(x)=cos(x)View attachment 39157 method of solving for this ?
View attachment 39143what is angle EDO?
i did not understand from OAEBOC= 90-38= 52
CBO= 180 - 52/ 2 = 64
ECB= 180-64 = 116
OAE= 180-116= 64
AOE= 180-64-64= 52
EOD= 90 - 52 = 38
EDO= 180-38/2 = 71
DONE
thats simple just draw a tangent AE and angle OAE and because of taht radius both angles r same so AOE than draw an imaginary line EO n than EOD AND he divide 38 by 2 cause OE and OD r radius so angle will be samei did not understand from OAE
i did not understand from OAE
i dont understand when to use ln or log. can someone please explain. for example
find inverse of f(x)= 2^x
View attachment 39230 question part iv
the answewr is 5/6 how?
I think so log and ln r not in the syllabus and if there is any question in past papers then post it here with year nameNeither do i know about that.. but some questions come like "2^2x=4^2 Find X?" ... i just make the base same of the both sides... the answer will be
= 2^2x =2^4
=2x=4
x=4/2=2..
i dont have any idea how to use log and in.. if u know anything about it please tell me...
which yearView attachment 39146 how is this drawn? can anyone do it on paint ?
some one please help me with transformation matrices and how do we get to know the martix that maps one to other? any video ? guide anything ?
found it in the addendum. thank you. i am doing the IGCSE's not O level thats why i thought this book is not the one to look at. but surprisingly enough the O level books i find are much better than IGCSE ones.There are specific types of matrices given in D4. If u have that book, search for it in it... It is given for every type of transformation either it be on y-axis as invariant or x-axis as invariant. If u have that book, search for it otherwise i will post it in here..
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