If α denotes the number of solutions of |1-i|^x=2^x and β =( |z| arg(z)), where z= π 4 (1+i)^4( 1-√π · i √π +i+ √π -i 1+√π · i), i=√-1, then the…
JEE Main 2024 — Mathematics Algebra
2024integermedium
If α denotes the number of solutions of ∣1−i∣x=2x and β=(arg(z)∣z∣), where z=4π(1+i)4(π+i1−π⋅i+1+π⋅iπ−i), i=−1, then the distance of the point (α,β) from the line 4x−3y=7 is ______
Official previous-year question
Held on 31 Jan 2024 · Verified 6 Jul 2026.
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Solution
Given,
∣1−i∣x=2x
⇒(2)x=2x
⇒x=0
Hence, the number of solutions will be one, so α=1
Now, solving
z=4π(1+i)4(π+i1−π⋅i+1+π⋅iπ−i)
⇒z=4π(1+i)4[π+1π−πi−i−π+1+ππ−i−πi−π]
⇒z=4π(1+i)4[π+1−2πi−2i]
⇒z=2πi(1+i)4
⇒z=−2πi(1+4i+6i2+4i3+1)
⇒z=2πi
So, arg(z)=2π
⇒β=arg(z)∣z∣=2π2π=4
Hence, the distance from (α,β)≡(1,4) to 4x−3y=7 will be ∣42+324−3×4−7∣=515=3
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