Verb ようが Verb るまいが

When to use

Formal, literary "whether one does X or not, (the outcome is unchanged)" - stronger, more declarative than ようか～まいか.

Explanation

Verbようが Verbるまいが indicates that whatever happens - whether the action is done or not - the outcome remains unchanged or the speaker's stance remains the same.

• 彼かれが来きようが来くるまいが、パーティーは始はじまります。

  Whether he comes or not, the party will start.

  Kare ga koyou ga kurumai ga, paatii wa hajimarimasu.

• 勉強べんきょうしようがしまいが、テストの結果けっかは変かわらない。

  Whether you study or not, the test results won't change.

  Benkyou shiyou ga shimai ga, tesuto no kekka wa kawaranai.

• 雨あめが降くだろうが降ふるまいが、ピクニックに行いきます。

  Whether it rains or not, we're going on a picnic.

  Ame ga furou ga furumai ga, pikunikku ni ikimasu.

• 暑あつかろうが寒さむかろうが、毎日まいにちジョギングします。

  Whether it's hot or cold, I jog every day.

  Atsukarou ga samukarou ga, mainichi jogingu shimasu.

Whether Or Not (To Do X)

• Verb ようか VerbるまいかVerb you ka Verb ru mai kaN1Expresses indecision: 'Should I do it or not?'.
• ～か～まいか〜ka 〜maikaN2Used to express a dilemma or indecision between two…
• ～かどうか〜ka dou kaN4Used to express 'whether' or 'if' in indirect questions or…

Compare when to use each