A number of books say we can use the substitution y=(m+1/m) to solve quartic equations that are symmetric i.e equations of the form ax^4 +bx^3+cx^2+bx+a=0, but do not talk much on quartic equations that are not symmetrical and are not easily factorised. The question is, are there other general methods of solving non-factorisable polynomial equations of degree greater than 3?
I have a problem bringing out the equations here
It t akes a student 12minutes to et to the class from the sporting groung if she waks at 1.5m/s and runs at 3m/s. Had she walked half as far, she should have taken 8minutes. Find the di stance between the school and the classroom.
Pls can i have some help?Thanks in advance
I'll continue from
where the inv of tan:
sin,cos and tan are +ve at 1st quandrant(angle=@°),sin +ve at 2nd(angle=180°-@),tan+ve at 3rd(angle=180°+@°) and cos+ve at 4th(angle=360°-@°).
Invtan(-1/2)=26.6° and Intan(-3°)=71.6°
Therefore required angles are
Sorry I don't haveagood programthat illustrate Maths symbols.