Determine whether the formula ϕ=(¬p⋁q)→(r→p) is T or F for an interpretation I where I(p)=T and I(q) =I(r)=F
1 tenth divided by 4 1 over 3
2 / x < 3 / ( x − 4 )
A reservoir contains 8000 liters of water. If 25% of the water is used, how much remains?
7x divided by 5 = 2x divided by 5. find x
1/(x + 1) ≥3/(x − 2)
f(x)=x^2/√6-x
$\frac{2x}{x^2+1}$
För vilka x-värden är uttrycket inte definierat?
Without using mathematical tables or calculator evaluate:7 3/5− 1 /3(1 1 /4 +3 1/3)x2 2/5. (3 marks)
If 𝑎 cos 𝜃 − 𝑏 sin 𝜃 = 𝑥 and 𝑎 sin 𝜃 + 𝑏 cos 𝜃 = 𝑦 , prove that 𝑎2 + 𝑏2 = 𝑥2 + 𝑦2.