Mathematics · 2024
JEE Main · 1 February 2024, Shift 1 · Q22
Let P={z ∈ C:|z+2-3 i| ≤ 1} and Q={z ∈ C: z(1+i)+z̄(1-i) ≤-8}. Let in P ∩ Q, |z-3+2 i| be maximum and minimum at z_1 and z_2 respectively. If…
Let $\displaystyle P=\{z \in \mathbb{C}:|z+2-3 i| \leq 1\}$ and $\displaystyle Q=\{z \in \mathbb{C}: z(1+i)+\bar{z}(1-i) \leq-8\}$. Let in $\displaystyle P \cap Q$, $\displaystyle |z-3+2 i|$ be maximum and minimum at $\displaystyle z_1$ and $\displaystyle z_2$ respectively. If $\displaystyle \left|z_1\right|^2+2\left|z_2\right|^2=\alpha+\beta \sqrt{2}$, where $\displaystyle \alpha, \beta$ are integers, then $\displaystyle \alpha+\beta$ equals $\displaystyle \_\_\_\_$.
Official answer
From NTA’s final answer key for this paper.
36
More from Complex Numbers
- Let S={z: 3 ≤|2 z-3(1+i)| ≤ 7} be a set of complex numbers. Then min_z ∈ S|(z+1/2(5+3 i))| is equal to:2026
- Let S={z ∈ C: 4 z^2+z̄=0}. Then Σ_z ∈ S|z|^2 is equal to:2026
- If α+i β and γ+i δ are the roots of x^2-(3-2 i) x-(2 i-2)=0, i=√-1, then α γ+β δ is equal to:2025
- If α is a root of the equation x^2+x+1=0 and Σ_k=1^n(α^k+1/(α^k))^2=20, then n is equal to ____.2025
- Let z be a complex number such that |z+2|=|z-2| and ((z+3)/(z-i))=(π)/4. Then |z|^2 is equal to:2026
- Let the circles C_1:|z|=r and C_2:|z-3-4 i|=5, z ∈ C, be such that C_2 lies within C_1. If z_1 moves on C_1, z_2 moves on C_2 and min |z_1-z_2|=2,…2026
- Let the product of ω_1=(8+i) sin θ+(7+4 i) cos θ and ω_2=(1+8 i) sin θ+(4+7 i) cos θ be α+i β, i=√-1. Let p and q be the maximum and the minimum…2025
- Let r and θ respectively be the modulus and amplitude of the complex number z=2-i(2 tan (5 π)/8), then (r, θ) is equal to2024
JEE Main 2024 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.