10 Calculus Questions Integrals,Equations, PDF file, Dead line after 1 hour

Uploaded a pdf file

My Answers :

1:
a- x= 1/10 (9-√41) ≈0.259688,Or x=1/10 (9+√41)≈1.54031
b:y=0 Or y=7/3
c: didn't solve.
d: t= 1/3 log⁡(5/2)≈0.30543
e::β=3/5 Or β=-3/5

2: didn't solve.

3:sin^-1⁡(√5/4)≈0.59
tan (0.59)≈0.67

4: didn't solve

5:sin⁡(α)+cos⁡(α)=4/3
We solve the equation
α= 2tan^-1⁡(1/7 (3-√2))〗
We calculate sin⁡(2α)
sin⁡(2α)=7/9

6:max⁡{f(x)=x^3-5x^2-8x+12}=400/27 at x=-2/3

7:
a: 0
didn't solve b,c,d,e

8: The angle is 109.5 degrees

9:
a :: e^2x (6x^2+6x-sin⁡(x)+2 cos⁡(x)+10)
b: 6y log⁡(5)
c: sec⁡θ
d: 800
e: z( log⁡(z)-1)+constant

10 : didn't solve.

 

If i want to type the work i did it would take about 2 hours i'm sorry i'm slow at typing and now time is against me , i started since 3 hours.

 

Guys please help me right now and after sending my answers to my teacher i'll tell you my work on each of the problems

i don't have a scanner the pdf was sent by the teacher

and the teacher said you can seek help with other people

because the questions are hard

 

the date was when the pdf was created not received by me, i received this pdf today before 4 hours

if i knew how to solve them i wouldn't have asked :(

time is running out i'm not asking for an immediate answer i'm asking where to start

PS: our teacher gave his this homework without teaching us about functions and derivatives
i wrote these answers after reading a simple paper about functions and derivatives

i tried solving them before posting on the fourms

YES : I just talked to the teacher the deadline was change to next Wednesday instead of today :)

 

Deadline was changed now i have a whole week to solve the problems :)

 

Let's start with problem 7

(e) if m1=m2=m3

i'll convert everything to m1

a= g(3m1m1-4m1m1-m1m1)/(m1m1+m1(4m1+m1)

simplifying (3m1^2 -4m1^2-m1^2)/(m1^2+4m1^2+m1^2)
(-2m1^2)/(6m1^2 )
-2/6 = -1/3
a= g*(-1/3)

and what is meant by m1 is much larger than m2 and m3 ?

 

if the title got changed it would be better to avoid confusion

 

(b)

a=g(0-4m1m3-m1m2)/(0+4m3m1+m2m1)

a= g*-1

a= -g

 

and when m1 is smaller than m2 and m3 is that the opposite ? we neglect m1 when doing addition and subtraction with m2 and m3 ?